# Basky

> Basky is a cute, gamified daylight-wellness iPhone app. It sizes a conservative safe-sun window from your Fitzpatrick skin type and today's live UV index, tracks a gentle daylight streak, and offers a friendly vitamin D estimate. The core is free forever. Optional Basky Forever is a one-time unlock for cosmetic mascot skins — never a subscription. Private by default: no ads, no analytics, no account. General wellness guidance, not medical advice.

Site: https://basky-one.vercel.app/
Contact: andrewkittridge@icloud.com
App Store: https://apps.apple.com/us/app/basky/id6781856383

## Product
- [Home](https://basky-one.vercel.app/): Catch a little daily sunshine — just enough to feel good, never enough to burn.
- [Privacy Policy](https://basky-one.vercel.app/privacy)
- [Support](https://basky-one.vercel.app/support)

## Guides

### How Basky works
- [Apple Health and Time in Daylight](https://basky-one.vercel.app/apple-health-daylight): Basky can optionally write Time in Daylight to Apple Health — a factual duration of outdoor time you choose to save. The connection is write-only: Basky never reads your Health data and never exports its friendly vitamin D estimate. Turn it on or off in Settings; the core sun loop works fully without Health.
- [Basky Forever](https://basky-one.vercel.app/basky-forever): Basky Forever is an optional one-time App Store unlock for the Sunshine Pack of pixel skins and future cosmetic extras. It never gates live UV, the safe-sun timer, vitamin D estimate, daylight streak, or Circles. The wellness core is free forever — Basky Forever is delight you buy once, not a subscription you rent monthly.
- [Daylight streak](https://basky-one.vercel.app/daylight-streak): A daylight streak in Basky is consecutive days you met a gentle outdoor goal: finishing a bask inside your safe-sun window or checking in that you got some daylight when UV is resting. It forgives weather, never rewards over-exposure, and never turns a miss into moral failure. History stays on your device — no account required.
- [Fitzpatrick skin type, sized into a safe-sun window](https://basky-one.vercel.app/fitzpatrick-skin-type): Basky is the warm Fitzpatrick skin type app experience: choose how your skin usually handles sun (types I–VI), combine it with today’s live UV, and get a conservative personal safe-sun window — about 60% of a reference MED — plus a gentle daylight habit. Free core, no account, now on iPhone.
- [How Basky works](https://basky-one.vercel.app/how-basky-works): Basky reads today’s live UV (Open-Meteo when location is allowed), combines it with your Fitzpatrick skin type, and returns a conservative safe-sun window of about 60% of a minimal erythemal dose, clamped to 5–90 minutes. You bask with a capped timer, collect a gentle reward, keep a daylight streak, and optionally check in when the sky is resting — all without an account.
- [Private sun app](https://basky-one.vercel.app/private-sun-app): Basky is built as a private sun app: no account wall, no ads, no behavioral tracking. Location is optional and used only for an Open-Meteo UV lookup. History stays on your device. Sunshine Circles share a first name and sun-day signal only. Apple Health, when enabled, is write-only Time in Daylight — never a read, never a vitamin D export.
- [Safe sun timer](https://basky-one.vercel.app/safe-sun-timer): Basky’s safe sun timer turns your Fitzpatrick skin type and today’s live UV into a personal window of minutes — aimed at about 60% of a minimal erythemal dose and clamped between five and ninety minutes. Start the ring outside, stop at the cap, and treat over-exposure as a non-event. It does not replace sunscreen, clothing, or medical care.
- [Sunshine Circles](https://basky-one.vercel.app/sunshine-circles): Sunshine Circles are Basky’s optional private groups for cheering daylight together. Members see a first name you choose and a simple caught-the-sun signal — not location, streak length, vitamin D estimates, or session times. Invite by unguessable code; no Basky login, no leaderboards, no pressure past a safe-sun window.
- [UV index app](https://basky-one.vercel.app/uv-index-app): Basky is a UV index app that shows today’s live ultraviolet where you are (Open-Meteo when location is allowed), labels it in plain language, and turns it into a personal safe-sun window with your Fitzpatrick type. The number alone is half the story — Basky adds the half that is you, then caps the timer so over-exposure earns nothing.
- [Vitamin D estimate](https://basky-one.vercel.app/vitamin-d-estimate): Basky’s vitamin D estimate is a friendly conservative figure that can climb while you bask inside your safe-sun window. It is capped with the same dose guardrail, never presented as a blood test or dosing tool, and never written to Apple Health. Use it as encouragement for a daylight habit — not as medical advice.

### UV, explained
- [Altitude and UV](https://basky-one.vercel.app/guides/altitude-and-uv): Ultraviolet at the surface generally increases with altitude because the atmosphere above you is thinner. Hiking and ski days can combine stronger UV with snow reflection. Basky still sizes a conservative safe-sun window from live UV and your Fitzpatrick type — roughly 60% of a MED within [5, 90] minutes — so elevation becomes a reason for shorter, kinder visits, not longer ones.
- [Best time of day for sun?](https://basky-one.vercel.app/guides/best-time-of-day-for-sun): “Best time for sun” depends on the goal. Peak erythemally weighted UV usually arrives late morning to early afternoon — useful for a short Basky bask, with a shorter window. Earlier daylight can still support a gentle circadian habit when UV is low. Basky’s “best light” hint follows the UV curve; it is guidance for timing, not a prescription.
- [Clouds and UV](https://basky-one.vercel.app/guides/clouds-and-uv): Clouds change ultraviolet, but they are not a reliable off switch. Thin or broken cloud can still transmit a high UV index, and bright overcast can surprise fair skin. Basky prefers live and forecast UV from weather data over guessing from brightness. On cloudy High days, windows stay short; on truly Low overcast, a daylight check-in still counts.
- [High UV index — what to do (gently)](https://basky-one.vercel.app/guides/high-uv-index-what-to-do): A high UV index means erythemally weighted ultraviolet is strong, so unprotected skin can reach a burn dose faster. Basky’s response is a shorter conservative window — about 60% of a MED, within [5, 90] minutes — plus shade after a little. High UV is not a reason to shame yourself indoors all day; it is a reason to keep the visit brief and kind.
- [Low UV still counts](https://basky-one.vercel.app/guides/low-uv-index-still-counts): A low UV index (WHO 0–2) means erythemally weighted ultraviolet is gentle — sometimes too low for a baskable window. That does not make daylight worthless. Basky invites a check-in for winter, evening, and soft skies so your habit stays kind when the sun is resting, without stretching exposure or inventing a burn dose.
- [Reflection, snow, and water — UV’s bounce](https://basky-one.vercel.app/guides/reflection-snow-water-uv): Bright surfaces reflect ultraviolet — an effect often called albedo. Fresh snow is a strong reflector; pale sand and water also bounce UV toward skin from below and the sides. Basky sizes a conservative window from live erythemally weighted UV and your Fitzpatrick type; near reflective terrain, treat that window as especially worth honoring, with shade and cover ready.
- [Shade and UV](https://basky-one.vercel.app/guides/shade-and-uv): Shade reduces ultraviolet by blocking the direct solar beam, but scattered sky UV and reflections can still reach you in open shade. Basky sizes a conservative safe-sun window for intentional exposure using live UV and your Fitzpatrick type; shade is how you end the visit kindly. Treat shade as a strong helper, not a guaranteed UV off switch.
- [The UV index scale, band by band](https://basky-one.vercel.app/guides/uv-index-scale): The UV index scale is an international 0–11+ ladder of erythemally weighted ultraviolet. WHO bands group it into Low (0–2), Moderate (3–5), High (6–7), Very High (8–10), and Extreme (11+). Basky reads the live number and sizes a shorter or longer safe-sun window to your Fitzpatrick type — never a one-size timer.
- [UV forecast explained](https://basky-one.vercel.app/guides/uv-forecast-explained): A UV forecast predicts how erythemally weighted ultraviolet may evolve through the day; live UV is the best available reading for your location right now. Basky uses Open-Meteo for UV lookup when you allow location, with a generic fallback if you decline. Forecasts guide hints like “best light around …”; your conservative safe-sun window follows live UV plus Fitzpatrick type.
- [UV index by hour — the day’s natural curve](https://basky-one.vercel.app/guides/uv-index-by-hour): UV typically climbs from morning, peaks around late morning to early afternoon at mid-latitudes, then declines toward evening. Basky may hint at “best light around 1:00 PM” from the forecast curve — a gentle timing cue, not a prescription. Your Fitzpatrick type and live UV still set a conservative safe-sun window.
- [UVA vs UVB, without the lab coat](https://basky-one.vercel.app/guides/uva-vs-uvb): Ultraviolet includes UVA and UVB. UVB is more strongly tied to skin reddening (erythema) and to how Basky frames a friendly vitamin D estimate. The UV index is erythemally weighted — it emphasizes wavelengths that redden skin rather than counting every photon equally. Basky uses that index with your Fitzpatrick type to size a conservative safe-sun window.
- [What is the UV index?](https://basky-one.vercel.app/guides/what-is-uv-index): The UV index is an international 0–11+ scale of erythemally weighted ultraviolet — the kind that reddens skin. It is not a heat index. Basky reads today's live UV where you are and sizes a conservative safe-sun window to your skin type, always aiming below a burn dose.

### Your skin, your window
- [Clothing and vitamin D](https://basky-one.vercel.app/guides/clothing-and-vitamin-d): Clothing protects skin and can change how Basky sketches a vitamin D encouragement number. It does not lengthen the safe-sun window. That window still comes from live UV and your Fitzpatrick type, clamped and conservative. The vitamin D figure is not a dose.
- [Fitzpatrick scale explained](https://basky-one.vercel.app/guides/fitzpatrick-scale-explained): The Fitzpatrick scale describes six skin types by how they tend to burn or deepen in color under sun — not a ranking of “better” skin. Basky asks a beach-day question, maps your answer to a type, and sizes a conservative safe-sun window. You can change it anytime in Settings.
- [How long can I stay in the sun?](https://basky-one.vercel.app/guides/how-long-can-i-stay-in-the-sun): “How many minutes in the sun?” depends on today’s UV index and your Fitzpatrick skin type. Basky’s answer is a conservative window: safeMinutes ≈ 0.40 × MED ÷ UVI, clamped between 5 and 90 minutes — an estimate for wellness timing, never a guaranteed burn clock.
- [Safe sun for Fitzpatrick Type I](https://basky-one.vercel.app/guides/skin-type-1-safe-sun): Fitzpatrick Type I tends to burn very easily and rarely deepens in color. Basky uses a conservative MED input (200 J/m²) and a ~60%-of-MED heuristic so Type I windows stay short, humble, and never a race past the line. Sunscreen, shade, and clothing still matter.
- [Safe sun for Fitzpatrick Type II](https://basky-one.vercel.app/guides/skin-type-2-safe-sun): Fitzpatrick Type II tends to burn easily and deepen only a little. Basky uses a MED input of 250 J/m² and a ~60%-of-MED heuristic so Type II windows stay conservative. Live UV still decides how short the minutes feel today.
- [Safe sun for Fitzpatrick Type III](https://basky-one.vercel.app/guides/skin-type-3-safe-sun): Fitzpatrick Type III sometimes burns and deepens gradually. Basky uses a MED input of 350 J/m². At UV 5, the conservative estimate is about 28–29 minutes — a marketing anchor and an illustration, not a personal lab result. Sunscreen and shade still apply.
- [Safe sun for Fitzpatrick Type IV](https://basky-one.vercel.app/guides/skin-type-4-safe-sun): Fitzpatrick Type IV burns less often and deepens readily. Basky uses a MED input of 450 J/m² so windows run longer than Types I–III at the same UV — still clamped, still conservative, still paired with sunscreen and shade.
- [Safe sun for Fitzpatrick Type V](https://basky-one.vercel.app/guides/skin-type-5-safe-sun): Fitzpatrick Type V rarely burns and deepens easily. Basky’s MED input is 600 J/m², so windows run longer at the same UV — still estimated conservatively (~60% of MED heuristic), still clamped 5–90 minutes, still never a skip-sunscreen pass.
- [Safe sun for Fitzpatrick Type VI](https://basky-one.vercel.app/guides/skin-type-6-safe-sun): Fitzpatrick Type VI is deeply melanated and burns infrequently. Basky’s MED input is 1000 J/m², so windows are the longest at a given UV — still estimated conservatively, still clamped at 90 minutes, still never infinite. Melanin is not armor without limits.
- [Sensitive skin and sun](https://basky-one.vercel.app/guides/sensitive-skin-and-sun): If your skin reacts easily to sun, Basky’s advice is extra caution — shorter trust in any estimate, more shade and covering, and a dermatologist for real concerns. Basky is wellness guidance, not a diagnosis of sensitivity, allergy, or disease.
- [Sunburn vs safe sun](https://basky-one.vercel.app/guides/sunburn-vs-safe-sun): Sunburn is reddening and injury from too much UV. Safe sun, in Basky’s sense, is a short wellness visit sized below a burn-dose idea. Basky never treats pink skin as progress and never rewards staying past the window.
- [Sunscreen and a sun timer](https://basky-one.vercel.app/guides/sunscreen-and-a-sun-timer): A sun timer answers “about how many minutes?” Sunscreen answers “how do I protect exposed skin while I’m out?” Basky requires both ideas: the window is a conservative ceiling, not a skip-SPF pass. Clothing may change the vitamin D estimate — never the safe window.

### Daylight & vitamin D
- [A morning sunlight habit that actually sticks](https://basky-one.vercel.app/guides/morning-sunlight-habit): Morning outdoor light is one of the simplest wellness habits: step outside early, let your eyes meet the day, keep it short and kind. Basky treats it as a ritual, not a cure for insomnia, depression, or SAD — and pairs it with a safe-sun window when UV is real enough to bask.
- [A winter daylight habit that forgives the sky](https://basky-one.vercel.app/guides/winter-daylight-habit): Winter shrinks the day and often weakens UVB, especially at higher latitudes. Basky’s winter stance is gentle: get outside when you can, use a safe window if one appears, and check in on gray days so the habit survives the season — without fake vitamin D promises or shame for short sessions.
- [Circadian rhythm and daylight](https://basky-one.vercel.app/guides/circadian-rhythm-and-daylight): Your internal clock listens hard to bright outdoor light, especially near the start of your day. Basky treats daylight as a gentle circadian cue and a safe-sun practice — never as treatment for insomnia, depression, or seasonal affective disorder. Show up outside; keep UV honest when you bask.
- [Cloudy day daylight still counts](https://basky-one.vercel.app/guides/cloudy-day-daylight): Clouds change UV, mood, and motivation — they do not erase the value of stepping outside. Basky reads the forecast rather than trusting how bright it looks, offers a safe window only when UV supports one, and lets a daylight check-in keep your habit alive on fully closed skies.
- [Evening outdoor time still counts](https://basky-one.vercel.app/guides/evening-outdoor-time): After-work walks and dusk porch time are real outdoor life — even when ultraviolet has faded. Basky lets evening outdoor time count as a daylight check-in for your streak, while being honest that late light is often too weak for a safe bask or a meaningful vitamin D estimate.
- [How much sun do you need for vitamin D?](https://basky-one.vercel.app/guides/how-much-sun-for-vitamin-d): No honest app can give one number of minutes that works for every body, season, and sky. Basky refuses that shortcut. It sizes a safe-sun window to you and UV, then offers a conservative vitamin D estimate capped with that dose — encouragement, not a dosing prescription or deficiency treatment.
- [Lunch break sun without the burnout](https://basky-one.vercel.app/guides/lunch-break-sun): Lunch is often the most realistic daylight window in a workday — especially when mornings are packed and evenings go dark. Basky helps you take a short midday bask inside a personal safe window, or a simple outdoor check-in when UV is too low, without turning lunch into a tan project.
- [Office daylight in a building that forgot the sky](https://basky-one.vercel.app/guides/office-daylight): Most office light is not daylight. Basky’s office playbook is practical: steal short outdoor minutes at the edges of the day or at lunch, bask only inside a personal UV window, and check in on gray or busy days so the habit survives meetings — without medical overclaim or subscription pressure.
- [Time in Daylight and Apple Health](https://basky-one.vercel.app/guides/time-in-daylight-apple-health): Apple Health’s Time in Daylight category tracks how long you spent in daylight. Basky can write that duration when you opt in — and only that. It never reads Health data, and it never sends its friendly vitamin D estimate into Health. Private, optional, and easy to turn off.
- [Vitamin D from sunlight](https://basky-one.vercel.app/guides/vitamin-d-from-sunlight): Skin can make vitamin D when UVB reaches bare skin — and real synthesis varies with season, latitude, clothing, age, and biology. Basky shows a friendly, conservative estimate from your safe session, capped so over-exposure earns nothing. It is encouragement, not a measurement or dosing tool.

### Habits that stick
- [How to build a daily sun habit](https://basky-one.vercel.app/guides/daily-sun-habit): A daily sun habit is a short outdoor ritual sized to your skin and today’s UV — not a grind, not a tan quest. Basky’s loop is skin type → timer → safe-dose cap → reward → streak, with cloudy daylight check-ins that keep the spirit intact.
- [How to get more daylight indoors](https://basky-one.vercel.app/guides/get-more-daylight-indoors): Indoors, prioritize bright windows for mood and circadian support — but remember UV through glass is limited. Basky’s habit still prefers outdoor capped basks when you can, with daylight check-ins that keep streaks gentle and honest.
- [How to keep a sun streak](https://basky-one.vercel.app/guides/keep-a-sun-streak): A Basky sun streak is a gentle chain of care — finished safe windows and cloudy daylight check-ins — not a dare to stay out longer. Skin type, timer, cap, reward, and history stay kind, private, and free at the core.
- [How to keep a weekend sun ritual](https://basky-one.vercel.app/guides/weekend-sun-ritual): A weekend sun ritual is slower on purpose: one capped Basky bask sized to your skin, then shade and leisure — or a daylight check-in if clouds win. Same loop as weekdays, warmer pacing, no shame and no tan quest.
- [How to start basking](https://basky-one.vercel.app/guides/how-to-start-basking): Starting to bask means one capped outdoor session sized to your skin and today’s UV — not a lifestyle overhaul. Follow Basky’s loop: skin type → start timer/ring → safe-dose cap → reward → streak, with cloudy check-ins when needed.
- [How to take an outdoor microbreak](https://basky-one.vercel.app/guides/outdoor-microbreak): An outdoor microbreak is a tiny, repeatable step outside — sized by Basky’s safe-sun window when UV is up, or a daylight check-in when it is not. Skin type → timer → cap → reward → streak, without shame.
- [How to track sun exposure](https://basky-one.vercel.app/guides/track-sun-exposure): Tracking sun exposure should show capped safe sessions and honest cloudy days — not pressure to stay out longer. Basky records the ritual loop on your device: skin type, timer, safe-dose cap, reward, and a gentle streak with daylight check-ins.
- [Morning sun reminder without the spam](https://basky-one.vercel.app/guides/morning-reminder-sun): A morning sun reminder in Basky is a local notification on your iPhone — not a push server campaign. It cues you to open Today, then follow skin type → timer → safe-dose cap → reward, or a cloudy daylight check-in, without shame.
- [Sun timer for iPhone](https://basky-one.vercel.app/guides/sun-timer-for-iphone): A sun timer for iPhone should size minutes to your skin and today’s UV, then stop you kindly. Basky’s basking timer and ring follow skin type → start → safe-dose cap → reward → streak, without accounts, shame, .
- [What is a daylight check-in?](https://basky-one.vercel.app/guides/daylight-check-in): A daylight check-in is Basky’s honest tap for days when UV is resting but you still met the light. It keeps streaks kind, skips fake basks, and supports the ritual loop without shame or medical claims.

### Seasons & situations
- [Autumn daylight, without the mixed messages](https://basky-one.vercel.app/guides/autumn-daylight): Fall days get shorter, yet a clear autumn noon can still hold meaningful UV. Basky reads live ultraviolet and your Fitzpatrick skin type so you get a conservative safe-sun window when the sky is strong — and a gentle daylight check-in when it is not. Sunscreen still matters on bright days; this is wellness, not a last-chance tan.
- [Balcony sun, sized to a small sky](https://basky-one.vercel.app/guides/balcony-sun): Balconies make outdoor light reachable on busy days — and they can also trap you in reflective, high-UV boxes at noon. Basky reads live UV and your Fitzpatrick skin type for a conservative safe-sun window in true open air. Closed glass and deep shade are different stories; sunscreen and shorter visits still matter. Wellness guidance, not a tan corner.
- [Beach UV, with respect (not a tan agenda)](https://basky-one.vercel.app/guides/beach-uv): At the beach, ultraviolet meets reflection from sand and water, so the day can outpace how cool the wind feels. Basky reads live UV and your Fitzpatrick skin type to offer a conservative safe-sun window — a short personal visit, not a color challenge. Shade, clothing, and sunscreen still belong in the tote bag; this is wellness, not beach-tan advice.
- [Commute daylight you can actually keep](https://basky-one.vercel.app/guides/commute-daylight): Walking, waiting, or biking to work already puts you under the sky. Basky helps you treat that contact as a daylight check-in when UV is low, and as a short personal safe-sun window when live UV and your Fitzpatrick skin type allow — without turning the commute into unprotected overtime. Sunscreen still has a place on bright routes; this is wellness guidance, not medical advice.
- [Gardening sun time that respects the clock](https://basky-one.vercel.app/guides/gardening-sun-time): Gardening invites hours outdoors while ultraviolet quietly accumulates on necks, arms, and the tops of ears. Basky pairs live UV with your Fitzpatrick skin type for a conservative safe-sun window — a short intentional bask amid the chores, not permission to weed uncovered until dusk. Hats, shade breaks, and sunscreen still matter; this is daylight wellness, not medical advice.
- [Hiking UV — especially when the trail climbs](https://basky-one.vercel.app/guides/hiking-uv): On the trail, hours add up and altitude can strengthen ultraviolet for the same forecast vibe. Basky uses live UV and your Fitzpatrick skin type to size a short safe-sun window — a respectful pause in open exposure, not a reason to chase color. Hats, sleeves, sunscreen, and shade trees remain part of a careful hike; this is wellness guidance, not medical advice.
- [January daylight, without forcing a bask](https://basky-one.vercel.app/guides/january-daylight): In January many latitudes see low UV for long stretches — and that is okay. Basky emphasizes a gentle daylight check-in when the sun is resting for basking, and still offers a conservative safe-sun window when live UV and your Fitzpatrick skin type say a short visit is reasonable. No shame, no tan goals; sunscreen remains wise on bright reflective days.
- [Park lunch UV, timed like you mean it](https://basky-one.vercel.app/guides/park-lunch-uv): Lunch breaks often coincide with the day’s stronger ultraviolet hours. Basky reads live UV and your Fitzpatrick skin type so a park sandwich can include a short personal safe-sun window — then shade — instead of an accidental overdone hour. Sunscreen and trees still matter; this is daylight wellness, not a midday tan plan.
- [Running in the sun without treating UV as a coach](https://basky-one.vercel.app/guides/running-in-sun): Running stacks minutes outdoors while wind and sweat mute comfort cues. Basky reads live UV and your Fitzpatrick skin type so any deliberate open-sky wellness dose stays inside a conservative safe-sun window — not a tan-training plan. For most sunny runs, clothing and sunscreen do the long work; Basky keeps the short bask honest. Wellness guidance, not medical advice.
- [Snow UV is real (cold is not a sunscreen)](https://basky-one.vercel.app/guides/snow-uv): Fresh snow can reflect a large share of ultraviolet toward skin that thought winter was harmless. Basky reads live UV and your Fitzpatrick skin type so bright cold days get a conservative safe-sun window — short, personal, and honest — while low-UV gray days stay gentle daylight check-ins. Sunscreen for face and lips still belongs in the pocket; this is wellness, not medical advice.
- [Summer sun without overdoing it](https://basky-one.vercel.app/guides/summer-sun-without-overdoing): Midsummer light can feel friendly while the UV index is already high. Basky reads today’s live UV, pairs it with your Fitzpatrick skin type, and offers a conservative safe-sun window — a short visit, not a marathon. Sunscreen, shade, and clothing still matter; this is wellness, not a tan plan.
- [The spring UV surprise](https://basky-one.vercel.app/guides/spring-uv-surprise): In spring the air often feels mild while the UV index has already climbed. Basky reads live UV where you are, pairs it with your Fitzpatrick skin type, and sizes a conservative safe-sun window so a cool bright noon does not quietly overdo it. Shade and sunscreen still matter; this is daylight wellness, not a race into summer color.

### Choose a sun app
- [Best daylight habit app: cloudy days and gentle streaks](https://basky-one.vercel.app/guides/best-daylight-habit-app): A daylight habit app should work in gray weeks, not only on perfect UV days. Look for honest cloudy-day check-ins, streaks that forgive weather, a separate safe-sun bask when UV allows, privacy, and a free core. Basky is built for that year-round ritual.
- [Best sun timer app: criteria for a safe daily window](https://basky-one.vercel.app/guides/best-sun-timer-app): A sun timer is only as good as the dose model behind it. Look for live UV, Fitzpatrick skin type, a hard safety cap, a cloudy-day habit that does not invent UV, and a free core with no account. Basky’s timer is built that way and is now on iOS.
- [Best UV index app for iPhone: what to look for](https://basky-one.vercel.app/guides/best-uv-index-app-iphone): The “best” UV index app for iPhone is the one that turns today’s sky into a personal, capped window — not a raw number alone. Look for live UV, Fitzpatrick skin type, a hard safety stop, on-device privacy, and a free core. Basky is built that way and is now on iOS.
- [Best vitamin D sun app: estimates, caps, and honesty](https://basky-one.vercel.app/guides/best-vitamin-d-sun-app): The best vitamin D sun app is honest: it offers a friendly estimate from sun time, never a blood test, and it caps exposure with live UV and skin type. Look for privacy, no account, and a free core. Basky is built that way — now on iOS.
- [Compare sun apps: a criteria checklist hub](https://basky-one.vercel.app/guides/compare-sun-apps): Compare sun apps by criteria, not hype: live UV, personal skin type, hard safety cap, cloudy-day daylight, no account, on-device history, Health write-only, free core, honest vitamin D estimates. Basky is built to that checklist and is now on iOS.
- [Private wellness app for iPhone: a practical privacy checklist](https://basky-one.vercel.app/guides/private-wellness-app-iphone): Private wellness on iPhone means no account by default, data on device, location used narrowly, Health write-only if at all, and no ad or analytics SDKs. Basky follows that checklist for a gentle sun habit — now on iOS.
- [Sun app with no subscription: what “free core” should mean](https://basky-one.vercel.app/guides/sun-app-no-subscription): A no-subscription sun app should keep live UV, personal skin type, the safety-capped timer, daylight habit, and history free forever. Optional paid unlocks should be cosmetic and ideally one-time. Basky is built that way — Basky Forever never rents the core.
- [Sun exposure tracker for iOS: history without the shame](https://basky-one.vercel.app/guides/sun-exposure-tracker-ios): A sun exposure tracker on iOS should log personal, safety-capped sessions — not push longer outdoor time. Look for live UV, skin type, kind cloudy-day habits, on-device history, no account, and a free core. Basky is built for gentle tracking.
- [UV app without an account: local-first sun tools](https://basky-one.vercel.app/guides/uv-app-without-account): A UV app without an account can still offer live UV, a personal safe-sun window, a capped timer, and a daylight habit — all stored on your iPhone. Basky has no login; the core is free and private by default.

### Light, for real life
- [Campus sun between classes, without the all-day lawn myth](https://basky-one.vercel.app/guides/students-campus-sun): Quads, bus loops, and library steps already put students outdoors in scraps. Basky turns a few of those scraps into a personal safe-sun window from live UV and skin type — brief, anti-shame, never a tan challenge.
- [Dog-walk daylight: your loop, your minutes](https://basky-one.vercel.app/guides/dog-walk-sun): Leash loops already put you outside on days when nothing else does. Basky helps you notice a personal safe-sun window during the walk — sized to live UV and skin type — without turning the park into an all-afternoon sun session.
- [New to sun habits? Start smaller than you think](https://basky-one.vercel.app/guides/new-to-sun-habits): If intentional outdoor light is new, Basky keeps the on-ramp gentle: pick your skin type, read live UV, take a short personal window when the sky allows, and check in on closed-sky days — wellness, not a transformation challenge.
- [Night shift daylight: when you can, not when influencers say](https://basky-one.vercel.app/guides/night-shift-daylight): Night shifts invert the clock that daylight habits usually assume. Basky supports outdoor light when your wake life allows — plus honest check-ins — without posing as a clinical sleep plan or demanding a noon bask after every tour.
- [Nurses, shifts, and daylight you can actually reach](https://basky-one.vercel.app/guides/nurses-shift-daylight): Clinical shifts can hide the sky for twelve hours. Basky helps nurses use break-room doors, post-shift sidewalks, and off days for a personal safe-sun window — or a daylight check-in — without pretending to be occupational health policy.
- [Outdoor workers and UV: respect the dose you already get](https://basky-one.vercel.app/guides/outdoor-workers-uv): Construction, delivery, landscaping, agriculture, and field roles already mean hours under the sky. Basky is a personal, conservative daylight companion — not a reason to seek more sun, and never a replacement for workplace sun-safety programs.
- [Parents’ outdoor time as your daylight, not a kids’ dose chart](https://basky-one.vercel.app/guides/parents-outdoor-time): Family outdoor time is often the only sky parents touch. Basky helps adults claim a short safe-sun window during parks, walks, and stoop sits — sized to your skin and live UV — without turning Basky into a children’s product or pediatric guide.
- [Remote work daylight without leaving the whole day behind](https://basky-one.vercel.app/guides/remote-work-daylight): Remote work often trades a commute for four walls and a screen. Basky helps you claim a short, personal safe-sun window when UV allows — or a simple daylight check-in on cloudy or packed days — so outdoor light stays a habit, not another productivity chore.
- [Teachers, recess, and a little daylight of your own](https://basky-one.vercel.app/guides/teachers-recess-sun): Recess, duty, and the walk between buildings are often a teacher’s only outdoor scraps. Basky sizes a brief safe-sun window to your skin type and live UV so those minutes can be yours — without turning recess into a kids’ sun app or a school safety program.
- [Travel UV: new clocks, stronger skies, still use live readings](https://basky-one.vercel.app/guides/travelers-uv): Travel changes latitude, altitude, seasonality, and the clock on your phone. Basky sizes a safe-sun window from live UV where you are now — essential when destinations run stronger than home — plus kind check-ins through jet-lagged days.

### UV around the world
- [UV index in Amsterdam](https://basky-one.vercel.app/guides/uv-index-amsterdam): Amsterdam’s North Sea–influenced skies often mean cloud and modest UV, while clear summer days can still reach moderate to high midday bands — amplified by water reflection on the canals. Basky does not invent a Dam Square forecast; with location allowed, it reads live UV and sizes a conservative window to your skin type.
- [UV index in Atlanta](https://basky-one.vercel.app/guides/uv-index-atlanta): Atlanta’s humid-subtropical setting means a long stretch of meaningful midday UV, strong clear summers in the parks, and winters that stay brighter than northern cities even when gray weeks roll through. Basky reads live UV when you allow location — this page is climate context, not today’s number.
- [UV index in Auckland](https://basky-one.vercel.app/guides/uv-index-auckland): Auckland follows southern seasons: strong UV in December–February summers and milder winters, with harbour glare and open volcanic cones adding exposure on clear days. Basky does not invent a Viaduct forecast; with location allowed, it reads live UV and sizes a conservative safe-sun window to your skin type.
- [UV index in Austin](https://basky-one.vercel.app/guides/uv-index-austin): Austin’s lower-mid latitude and long warm season mean many months of meaningful midday UV, with summers that shrink safe-sun windows on clear days and winters that stay brighter than the true north. Basky reads live UV when you allow location — this page is climate context, not today’s number.
- [UV index in Barcelona](https://basky-one.vercel.app/guides/uv-index-barcelona): Barcelona’s Mediterranean latitude typically brings strong late-spring to early-autumn UV, often high or very high on clear middays, with beach and waterfront reflection adding exposure. Basky does not invent a Barceloneta forecast; with location allowed, it reads live UV and sizes a conservative window to your skin type.
- [UV index in Berlin](https://basky-one.vercel.app/guides/uv-index-berlin): Berlin’s inland, mid-latitude setting brings dark winters with typically low UV and summers when clear spells can push midday ultraviolet into moderate–high bands — especially by lakes and in open parks. Basky does not invent a Brandenburg Gate reading; with location allowed, it uses live UV plus your skin type.
- [UV index in Boston](https://basky-one.vercel.app/guides/uv-index-boston): Boston’s New England latitude brings a sharp contrast between strong clear-summer UV along the Charles and harbor and a low-sun winter of brief beams between bricks. Basky reads live UV when you allow location — this page is climate context, not today’s number.
- [UV index in Cape Town](https://basky-one.vercel.app/guides/uv-index-cape-town): Cape Town sits in the southern hemisphere, so December–February is peak summer UV territory — often high to extreme on clear days — while winters are milder. Mountain slopes, beaches, and bright Atlantic light add exposure. Basky does not invent a Table Mountain forecast; with location allowed, it uses live UV and your skin type.
- [UV index in Chicago](https://basky-one.vercel.app/guides/uv-index-chicago): Chicago’s latitude brings a sharp season contrast: powerful clear-summer UV on the lakefront and a long stretch of low winter sun when daylight check-ins matter most. Basky reads live UV when you allow location — this page is pattern, not today’s index.
- [UV index in Denver](https://basky-one.vercel.app/guides/uv-index-denver): Denver’s Mile High altitude means stronger ultraviolet for a given sun angle, especially on clear days, with snow reflection adding face-level glare in winter and spring. Basky reads live UV when you allow location — this page is climate context, not today’s index.
- [UV index in Dublin](https://basky-one.vercel.app/guides/uv-index-dublin): Dublin’s Atlantic-influenced skies often keep UV modest, especially in winter, while clear summer days can still reach moderate bands around midday. Basky does not invent a Grafton Street forecast — with location allowed, it reads live UV and sizes a conservative window to your skin type.
- [UV index in Edinburgh](https://basky-one.vercel.app/guides/uv-index-edinburgh): Edinburgh’s northerly latitude brings long winter nights and typically low winter UV, while clear summer days can still deliver moderate ultraviolet around midday. Basky never fabricates a Castle Rock forecast — with location allowed, it uses live UV and your skin type for a conservative safe-sun window.
- [UV index in Honolulu](https://basky-one.vercel.app/guides/uv-index-honolulu): Honolulu’s tropical latitude keeps midday UV typically high year-round compared with mainland winters, with beach and ocean glare shrinking comfortable untimed sits. Basky reads live UV when you allow location — this page is climate context, not today’s number.
- [UV index in Lisbon](https://basky-one.vercel.app/guides/uv-index-lisbon): Lisbon’s southerly European latitude typically means strong clear-sky UV from spring through early autumn — often high or very high at midday — with Atlantic air, river reflection, and steep miradouros adding exposure. Basky does not invent a Belém forecast; with location allowed, it uses live UV and your skin type.
- [UV index in London](https://basky-one.vercel.app/guides/uv-index-london): London sits at a mid-latitude where winter UV is often low and summer UV can climb into moderate–high bands on clear days. Basky does not guess from the Tube map or the Thames glare — when you allow location, it reads live UV for where you are and sizes a conservative safe-sun window to your skin type.
- [UV index in Los Angeles](https://basky-one.vercel.app/guides/uv-index-los-angeles): Los Angeles sits near 34°N with a classic coastal twist: cool marine-layer mornings that often burn off into a strong midday sun. Basky reads live UV where you allow location — this page explains the climate pattern, not today’s number.
- [UV index in Madrid](https://basky-one.vercel.app/guides/uv-index-madrid): Madrid’s elevation and dry inland summers typically mean higher peak UV than London or Berlin — often reaching high or very high bands on clear middays — while winters are brighter than far-northern cities but still seasonal. Basky never posts a fake Retiro reading; with location allowed, it uses live UV and your skin type.
- [UV index in Melbourne](https://basky-one.vercel.app/guides/uv-index-melbourne): Melbourne’s ultraviolet follows the southern calendar — strong in summer, gentler in winter — while its changeable weather means the same afternoon can shift from cloud to glare. Basky ignores folk forecasts; with location on, it reads live UV and sizes a conservative safe-sun window to your skin type.
- [UV index in Mexico City](https://basky-one.vercel.app/guides/uv-index-mexico-city): Mexico City’s high-plateau elevation means ultraviolet is often stronger than coastal cities at a similar latitude — with clear-season middays frequently reaching high, very high, or extreme bands. Basky does not invent a Zócalo forecast; with location allowed, it reads live UV and sizes a conservative safe-sun window to your skin type.
- [UV index in Miami](https://basky-one.vercel.app/guides/uv-index-miami): Miami’s subtropical latitude keeps winter sun meaningfully stronger than in New York or Chicago, while summer middays are typically intense near water and open pavement. Basky reads live UV when you allow location — this page explains the pattern, not today’s index.
- [UV index in Minneapolis](https://basky-one.vercel.app/guides/uv-index-minneapolis): Minneapolis swings hard with latitude: a harsh low-sun winter when daylight check-ins matter most, snow that can bounce spring light, and clear summers with strong midday UV on the lakes. Basky reads live UV when you allow location — this page is climate context, not today’s number.
- [UV index in New York](https://basky-one.vercel.app/guides/uv-index-new-york): New York’s mid-latitude sky swings hard: high summer UV in open parks and rooftops, then a long season of low winter sun canyon light. Basky reads live UV when you allow location — this page is the climate story, not today’s number.
- [UV index in Paris](https://basky-one.vercel.app/guides/uv-index-paris): Paris sits at a mid-European latitude where winter UV is often low and clear summer middays can reach moderate to high bands — especially on open terraces and along the Seine. Basky skips postcard guesses; with location allowed, it reads live UV and sizes a conservative safe-sun window to your skin type.
- [UV index in Phoenix](https://basky-one.vercel.app/guides/uv-index-phoenix): Phoenix combines low-desert latitude with relentlessly clear warm-season skies, so summer midday UV is typically intense and safe-sun windows run short. Winters stay brighter than northern cities. Basky reads live UV when you allow location — this page is climate context, not today’s number.
- [UV index in Portland](https://basky-one.vercel.app/guides/uv-index-portland): Portland shares Pacific Northwest low-winter-sun patterns with Seattle but brings its own Willamette Valley texture — often a bit inland from marine gloom, with clear summer middays that still pack strong UV in the parks. Basky reads live UV when you allow location — this page is climate context, not today’s number.
- [UV index in Rome](https://basky-one.vercel.app/guides/uv-index-rome): Rome’s Mediterranean setting typically means higher spring-to-autumn UV than northern Europe, with clear middays often in high or very high bands, plus reflection from pale travertine and open piazzas. Basky does not invent a Colosseum forecast; with location allowed, it reads live UV and sizes a conservative window to your skin type.
- [UV index in San Francisco](https://basky-one.vercel.app/guides/uv-index-san-francisco): San Francisco’s marine climate hides ultraviolet behind fog and cool air — then delivers surprisingly strong UV on clear middays, especially away from the thickest marine layer. Basky reads live UV when you allow location — this page is climate context, not today’s number.
- [UV index in Seattle](https://basky-one.vercel.app/guides/uv-index-seattle): Seattle’s Pacific Northwest latitude means a long low-UV winter when daylight check-ins carry the habit, then clear high-summer days that can still deliver strong midday ultraviolet. Basky reads live UV when you allow location — this page is climate context, not today’s number.
- [UV index in Singapore](https://basky-one.vercel.app/guides/uv-index-singapore): Singapore’s equatorial latitude means ultraviolet is often high or very high around midday throughout the year, with less of a winter “off season” than temperate cities. Basky does not invent a Marina Bay forecast; with location allowed, it reads live UV and still returns a short, conservative safe-sun window sized to your skin type.
- [UV index in Stockholm](https://basky-one.vercel.app/guides/uv-index-stockholm): Stockholm’s high latitude creates an extreme seasonal daylight swing — scarce midwinter sun with typically low UV, and long midsummer days when clear middays can still reach moderate (sometimes higher) UV. Basky does not invent a Gamla Stan forecast; with location allowed, it reads live UV and sizes a conservative window to your skin type.
- [UV index in Sydney](https://basky-one.vercel.app/guides/uv-index-sydney): Sydney is a southern-hemisphere city where summer (December–February) brings strong UV and winter (June–August) is milder but still capable of meaningful exposure on clear days. Basky never invents a harbour forecast here — with location allowed, it reads live UV and builds a conservative window around your skin type.
- [UV index in Tokyo](https://basky-one.vercel.app/guides/uv-index-tokyo): Tokyo’s mid-latitude East Asian climate brings low winter UV, climbing spring light, and summer middays that often reach high or very high bands on clear days — with urban reflection from glass and pale pavement. Basky does not invent a Shibuya forecast; with location allowed, it reads live UV and sizes a conservative window to your skin type.
- [UV index in Toronto](https://basky-one.vercel.app/guides/uv-index-toronto): Toronto’s mid-latitude lakeside climate swings from strong clear-summer UV along the waterfront to a lengthy low-sun winter built for daylight check-ins. Basky reads live UV when you allow location — this page is climate context, not today’s index.
- [UV index in Vancouver](https://basky-one.vercel.app/guides/uv-index-vancouver): Vancouver’s coastal Pacific Northwest climate brings mild, often cloudy winters built for daylight check-ins, then clear summer days when midday UV can still run strong — plus reflective snow if you head up the North Shore. Basky reads live UV when you allow location — this page is climate context, not today’s number.

### Glossary
- [Basky glossary](https://basky-one.vercel.app/glossary): A hub of plain-language definitions for the words Basky uses on screen — safe-sun window, MED, erythemally weighted UV, Fitzpatrick type, vitamin D estimate, daylight streak, Sunshine Circles, and UV bands — each linked to a deeper guide. Wellness language, not clinical jargon.
- [Open-Meteo UV — Basky’s weather source](https://basky-one.vercel.app/guides/open-meteo-uv): Basky uses Open-Meteo to look up live ultraviolet for your location when you allow it. Coordinates support that weather query only — Basky does not build an account or ad profile from them. If you decline location, a generic fallback keeps the ritual usable. Live UV plus your Fitzpatrick type still drives a conservative safe-sun window.
- [What do UV band labels mean?](https://basky-one.vercel.app/guides/uv-band-labels): UV band labels are plain-language groups for the UV index — Low (0–2), Moderate (3–5), High (6–7), Very high (8–10), Extreme (11+) — based on international public messaging. Basky shows a band with your live UV so you can read the sky quickly, then sizes minutes to your Fitzpatrick type.
- [What does a daylight streak mean?](https://basky-one.vercel.app/guides/daylight-streak-meaning): A daylight streak in Basky is consecutive days you met a gentle outdoor goal — basking within your safe-sun window or checking in that you got some daylight. It is built to forgive weather, never to push you past a conservative UV dose.
- [What does Fitzpatrick type mean in Basky?](https://basky-one.vercel.app/guides/fitzpatrick-type-meaning): Fitzpatrick type is a six-point description of how your skin usually responds to sun — from burns easily to rarely burns. In Basky it is the personal input that, with today’s UV, sizes your safe-sun window. It is not a beauty rank, not a diagnosis, and not medical advice.
- [What does the vitamin D estimate mean?](https://basky-one.vercel.app/guides/vitamin-d-estimate-meaning): Basky’s vitamin D figure is a friendly estimate — encouragement that climbs while you bask and stops growing with the same conservative safe-sun dose. It is not a serum measurement, not a supplement plan, and not medical advice.
- [What does “safe-sun window” mean?](https://basky-one.vercel.app/guides/safe-sun-window-meaning): In Basky, a safe-sun window is your personal estimate of how many minutes of direct sun make a gentle wellness dose right now — from Fitzpatrick skin type plus live UV, aimed at about 60% of a minimal erythemal dose, then clamped. It is a calm cap, not a dare to burn.
- [What is a minimal erythemal dose (MED)?](https://basky-one.vercel.app/guides/med-minimal-erythemal-dose): A minimal erythemal dose (MED) is the amount of erythemally weighted UV that would just produce a perceptible reddening of skin. Basky uses conservative MED figures by Fitzpatrick type and targets roughly 60% of that dose for a safe-sun window — staying well short of a burn, as general wellness guidance.
- [What is a Sunshine Circle?](https://basky-one.vercel.app/guides/sunshine-circle-meaning): A Sunshine Circle is an optional private group in Basky where friends or family cheer each other’s sun days. Members see a first name you choose and a simple caught-the-sun signal — not location, streaks, vitamin D estimates, or rankings. No Basky account required.
- [What is erythemally weighted UV?](https://basky-one.vercel.app/guides/erythemally-weighted-uv): Erythemally weighted UV is ultraviolet light counted according to how strongly each wavelength tends to redden human skin. The UV index is built from that weighted irradiance. Basky reads today’s live index and pairs it with your Fitzpatrick type for a personal, conservative safe-sun window.

### About Basky
- [About Basky](https://basky-one.vercel.app/about): Basky is a calm daily sunshine habit for iPhone — live UV plus Fitzpatrick skin type become a conservative safe-sun window, a capped timer, and a gentle daylight streak. No account, no ads, no tracking. The core is free forever; Basky Forever is optional one-time cosmetics. General wellness guidance, not medical advice, now on the App Store.
- [Basky FAQ](https://basky-one.vercel.app/faq): Straight answers about Basky’s conservative safe-sun window, friendly vitamin D estimate, optional location, free core, one-time Basky Forever, Circles privacy, Apple Health write-only Time in Daylight, and a live App Store listing — all framed as general wellness, never medical advice.