Comparison

Mistral Weather vs Storm Window

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Mistral Weather

Get detailed current weather, hour-by-hour, and 7-day forecasts with animated radar maps. Explore historical weather data for any date and save multiple locations. An optional AI feature provides natural language summaries of the forecast.

Highlights
  • Current conditions and 7-day forecast
  • Animated precipitation radar map
  • Sun and moon times
  • Historical weather data ('On This Day')
  • Save multiple locations
  • Home Screen widgets
  • AI-powered forecast summaries
Features
Read full description

Mistral Weather is a modern weather app for iPhone and iPad. Open it and see current conditions, hour-by-hour and 7-day forecast, sun and moon times, humidity, UV, wind, and pressure at a glance. A layered weather map shows animated precipitation radar, temperature, and wind. "On This Day" surfaces historical weather for today's date from the last 40+ years — a fun way to see how today stacks up. All forecast data comes from Open-Meteo, and no account or sign-in is required. Launch the app and grant location access to get a localized forecast, or skip it and use the search to add any place on Earth. Save multiple locations and switch between them with a tap. Pick your favorite layer on the map — temperature, radar, or wind — and watch weather systems move in real time. Home Screen widgets show the current forecast in small, medium, and large sizes, plus an "On This Day" widget in small and medium. Background refresh keeps widget data current without draining battery. Customize units (°F / °C, mph / km/h), adjust map defaults, and manage Remove Ads and Mistral Weather AI from Settings. Upgrade to Mistral Weather AI for a natural-language summary of today's forecast on the main Weather tab. One quick read covers what's happening right now, what's coming in the next few hours, and what to wear or plan for — refreshed each hour, powered by OpenAI behind our server. Subscribers also have banner ads removed automatically. The subscription is $6.99/month or $59.99/year, which renews until canceled in Settings. All forecasts, locations, and preferences are stored on your device. Coordinates are sent to Open-Meteo only when fetching weather; nothing else is transmitted. The app is free with a single banner ad at the bottom of the main surfaces — purchase Remove Ads for a one-time fee to remove it permanently, or let a Mistral Weather AI subscription remove ads automatically while it's active. Mistral Weather uses Google AdMob and asks for App Tracking Transparency so ads can be personalized; declining is fully supported. Mistral Weather is an independent project and is not affiliated with Open-Meteo, Apple, or Google. Privacy Policy: https://mistralweather.com/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Storm Window

This app provides clear outdoor risk guidance based on hourly weather data, highlighting safe times for outdoor activities. It accounts for lightning, heat, wind, air quality, and rain, offering tailored advice for various pursuits.

Highlights
  • Clear outdoor risk guidance
  • 48-hour hourly risk timeline
  • Lightning-aware storm risk
  • Heat, air quality, wind, UV, rain, snow context
  • National Weather Service alert awareness
  • Home Screen widgets and Apple Watch support
Features
Read full description

Storm Window helps you find safer outdoor windows when weather risk is changing. Instead of giving you another raw forecast, Storm Window turns hourly weather data into a clear outdoor risk timeline, highlighting when conditions look clear, marginal, stormy, or severe. Built for runners, cyclists, walkers, golfers, beach days, trail time, work crews, and anyone who plans around lightning, heat, wind, air quality, and rain. Core features: • Clear "go / wait" style outdoor risk guidance • 48-hour hourly risk strip, shown as bars or dots • Lightning-aware storm risk • Heat, air quality, wind, UV, rain, and snow context • National Weather Service alert awareness • Current-location planning, plus one saved place • Home Screen widgets and Apple Watch support • Built-in explanations of what's driving each hour's risk Storm Window Pro adds: • Multiple saved locations • Activity-specific risk profiles (runner, cyclist, golfer, and more) • Custom activity profiles • Personal heat and AQI sensitivity tuning • Full hourly detail on tap • Driest-stretch highlight within your safe window • Per-location widgets and complications Storm Window Pro+ adds: • Trips: pin an upcoming event and get its own safe-window forecast and alerts • "Should I Go?" activity-aware guidance • Forecast change reviews and 48-hour forecast summaries • Apple Intelligence-powered risk explanations on supported devices — all features work without it Storm Window uses deterministic risk rules for its core safety assessment. Pro+ guidance does not replace the underlying risk rating. Storm Window is forecast guidance, not a guarantee of safe conditions. Weather can change quickly. When thunder roars, go indoors. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Mistral Weather4 screens
Storm Window4 screens

Verdict

The call

The clearest difference is ads: Storm Window at none against Mistral Weather's shown. Storm Window also leads on update cadence (every 5 days vs fortnightly). Mistral Weather's advantage is iOS requirement (18.0 vs 26.0). On price, rating, review sentiment and ratings volume 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Mistral Weather sells 3 in-app purchases, starting at $6.99 per month and Storm Window sells 4 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Mistral Weather against 5.0 for Storm Window. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Mistral Weather ships an update fortnightly, Storm Window every 5 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 7 level
Mistral Weather versus Storm Window: the parameters behind the verdict, then further details
ParameterMistral WeatherStorm Window
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings11
Update frequencyFortnightlyEvery 5 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, Apple Watch — better
Requires iOS18.0 — better26.0
Further details — not scored
Size30 MB48 MB
Age rating4+4+
DeveloperClarved Inc.Daniel Schumacher

Customer experience

Mistral Weather

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Storm Window

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Mistral Weather

Subscriptions2
  • Mistral Weather AI (Monthly)$6.991 Month
  • Mistral Weather AI (Yearly)$59.991 Year
One-time1
  • Remove Ads$3.99
4 purchases

Storm Window

Subscriptions4
  • Storm Window Pro Monthly$2.991 Month
  • Pro+ Monthly$4.991 Month
  • Storm Window Pro Annual7 Days trial$19.991 Year
Show 1 more
  • Pro+ Annual7 Days trial$29.991 Year

Questions

Is Mistral Weather free?
Mistral Weather is free to download, with in-app purchases available.
Is Storm Window free?
Storm Window is free to download, with in-app purchases available.
Which has better reviews, Mistral Weather or Storm Window?
Mistral Weather and Storm Window are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Mistral Weather or Storm Window have ads?
Mistral Weather shows ads; Storm Window does not.
Which is updated more often, Mistral Weather or Storm Window?
Mistral Weather ships an update fortnightly, and Storm Window every 5 days. Most recently, Mistral Weather was updated on October 24, 2026 and Storm Window on October 25, 2026.

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