UV Index Alerts vs SkyWindow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
UV Index Alerts
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UV Index Alerts — Smart UV Protection for Your Skin Stop guessing. Start knowing. UV Index Alerts tells you exactly when the sun is too strong for your skin — so you can enjoy the outdoors without the burn. DAILY UV BRIEFING Every morning, get a personalized alert with today's max UV forecast, your safe exposure time, and SPF recommendations — all before you leave home. REAL-TIME SPIKE WARNINGS UV levels can change fast. When UV suddenly jumps to dangerous levels, you get an instant alert so you can take action right away. PERSONALIZED FOR YOUR SKIN Set your Fitzpatrick skin type and get burn time estimates tailored specifically to you. Fair skin? You might have 15 minutes. Darker skin? You could have over an hour. No more one-size-fits-all advice. HOURLY AND 5-DAY FORECASTS Plan your week with detailed hourly UV graphs and a 5-day forecast. See exactly when UV is safe and when to stay in the shade. SAFE HOURS AT A GLANCE Instantly see which hours of the day are safe for your skin type. Perfect for planning outdoor workouts, walks, or beach trips. SUNSCREEN REMINDERS On high UV days, get a clear reminder to apply SPF 30+ before heading out. Never forget sunscreen again. WORKS EVERYWHERE Automatic GPS location or manual city search. Your UV data is always accurate for where you are right now. PRIVACY FIRST No account required. No login. Your location and skin data stay on your device. Nothing is uploaded or shared. Ever. WHO IS THIS FOR? Anyone who spends time outdoors Parents protecting their children's skin Athletes and outdoor workers People with sun-sensitive skin or conditions Anyone who has ever said "I didn't think I'd burn today" WHY UV INDEX ALERTS? Most weather apps bury the UV index somewhere deep in the forecast. We make it the main event. One app, one purpose: protect your skin from UV damage, every single day. Download now and never get caught off guard by the sun again.
SkyWindow
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SkyWindow tells you what you can actually see from your backyard tonight — not a generic all-sky chart. YOUR REAL SKY Capture your horizon with your phone (eight compass directions). SkyWindow uses AI to trace trees, roofs, and buildings, then filters every target list to what clears your skyline. TONIGHT'S VERDICT Get a clear GO, MAYBE, or STAY IN call based on cloud cover, wind, moon phase, and how many good targets are up for your site and gear. EQUIPMENT-AWARE TARGETS Add telescopes, binoculars, or a Seestar S30. Targets are matched to your field of view and aperture — no more hunting for objects you can't frame or resolve. PLAN & LOG Drag targets into an observing plan, browse the calendar, and log sessions with notes and what you saw. EVENING REMINDERS Turn on notifications in Profile. Around 8 pm local time, SkyWindow can nudge you when skies look worth opening the app. LANGUAGES English, Deutsch, Francais, Espanol, and Japanese. Change anytime in Profile. SkyWindow is built for amateur astronomers who observe from light-polluted backyards — where the horizon matters as much as the forecast.
Screenshots
Verdict
The clearest difference is device support: SkyWindow at 3 against UV Index Alerts's 1. SkyWindow also leads on iOS requirement (15.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | UV Index Alerts | SkyWindow |
|---|---|---|
| Price | Free | Free |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Burak Arslan | Andrew Reilly |
In-app purchases
UV Index Alerts
No in-app purchases
SkyWindow
No in-app purchases









