Why Weather vs UV Alert
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Why Weather
This app goes beyond basic forecasts to explain the science and uncertainty behind weather. It features an AI meteorologist named Sky that answers your weather questions and provides daily narrative summaries of upcoming conditions. It highlights discrepancies between forecasts and real-time observations.
- AI meteorologist for answering weather questions
- Daily narrative weather stories
- Forecast uncertainty and disagreement flagging
- Ground truth badge for real-time observation discrepancies
- Animated radar and nowcast
- Morning weather story notifications
- Severe weather alerts
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Why Weather is the thinking weather app—for the weather-curious and the weather-nerdy. We explain the science behind the forecast, and the uncertainty behind the science. Most weather apps give you the play-by-play, we include the color commentary. MEET SKY Why Weather is the only weather app with an AI meteorologist you can actually talk to. Ask Sky why a front is moving in, what a radar pattern means, why pressure is dropping, or what a hook echo looks like. Sky explains the why, not just the what. TODAY'S WEATHER STORY Tap "Today's weather story" on the forecast screen—or your daily morning notification—and Sky writes a short narrative explaining what's actually going to happen. Not just numbers and icons: the why behind the day. What the front is doing, what to plan around, whether the rain is for real or just hedging. The same story that arrives in your morning notification is one tap deep into Sky's view. FORECAST IN FLUX When the National Weather Service explicitly hedges in their forecast discussion, we flag it. When a station nearby observes different conditions than the model predicts, we show the disagreement. The forecast isn't gospel; we don't pretend it is. GROUND TRUTH Forecasts lag reality. When the model says cloudy but radar at your spot shows rain—or the nearest weather station is reporting different conditions than the model predicted—we surface a "Ground truth" badge instead of doubling down on the wrong forecast. Tap it to see the disagreement spelled out, including the source we're trusting and why. ANIMATED RADAR + NOWCAST Watch precipitation move in real time. Premium unlocks the next-hour nowcast so you know what's coming before it arrives. PUSH NOTIFICATIONS THAT RESPECT YOUR TIME — A one-sentence weather story, every morning, links to today's full weather story — Severe weather watches and warnings, the moment they're issued — A heads-up before rain begins, with intensity context BUILT FOR WEATHER NERDS — Concept-of-the-day cards spanning core meteorology, named systems, planetary atmospheres, and climate science — Learn factoids that surface real atmospheric facts — Honest framing about model resolution ("rain in the area," not "rain at your house") — Ground-truth badge when live observations disagree with the forecast model PREMIUM Unlock all forecast sources, all map layers (wind, heat), the next-hour radar nowcast, 10 day forecast (from 7), and unlimited Sky responses. Monthly and annual subscriptions available. If you've ever wondered what's actually going on up there—not just what to wear today—Why Weather is built for you. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
UV Alert
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Know if it's safe to be outside right now — at a glance. UV Alert gives you a clear, GPS-accurate read on the sun over your head and a simple answer to the only question that matters when you step out the door: is it safe now, or time to protect your skin? Built for people who actually go outside — parents, runners, commuters, anyone who cares about their skin. Not tanners. This app is sun-safety and skin-protection only. WHAT YOU GET — ALL FREE • "Safe now?" verdict — the current UV level plus a clear go-or-protect answer, built to check outdoors in one glance. No number buried behind a paywall. • GPS-accurate UV that refreshes on your real location — no more seeing a town hours away. • Free home-screen widget that stays up to date — the exact feature other top apps lock behind a subscription. • Sunscreen reapply timer with reminder pings — start it when you apply, and we'll nudge you for the every-two-hours reapply so you never forget. • Morning high-UV notification that matches the in-app curve exactly — no more "6 vs 8" mismatch alerts. • Today's hourly UV curve — plan around peak hours, tuned for extreme year-round UV. WHY WE BUILT IT Most UV apps paywall the two features people want most — the widget and the reapply reminder — or bury the number behind ads and upsells. We flipped it. The basics are free, funded by light ads, with no subscription and no clutter. MADE FOR THAILAND, WORKS WORLDWIDE Thailand lives under extreme UV (index 11–14) nearly all year, yet the number is buried in the built-in weather app with no reapply reminder and no morning warning. UV Alert is Thai-first and English-ready, with the widget + reapply + alert bundle no other app owns here. Your device language is used automatically. SUN-SAFETY ONLY We help you protect your skin — never tan it. No tanning tools, no medical or health claims, no vitamin-D tracking bloat. Just clear, honest UV information and a reminder to reapply. FREE, HONEST, NO SUBSCRIPTION Light ads keep it free. The features you use every day are never paywalled. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ UV data: currentuvindex.com (CC BY 4.0)
Screenshots
Verdict
The clearest difference is in-app purchases: UV Alert at none against Why Weather's 2. Why Weather's advantage is ads (none vs shown). On price, device support and iOS requirement 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. Why Weather sells 2 in-app purchases, starting at $4.99 per month. UV Alert asks for nothing beyond the download.
| Parameter | Why Weather | UV Alert |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 days | — |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 15 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Christopher Edward Risdon | Welton Ventures Technologies Pte. Ltd. |
In-app purchases
Why Weather
- Why Weather Premium Monthly$4.991 Month
- Why Weather Premium Annual$29.991 Year
UV Alert
No in-app purchases









