Flash Weather vs Nullschool
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Flash Weather
Get precise, AI-powered weather alerts for lightning, heat risk, and radar. Receive instant notifications tailored to your location, with customizable settings for safety and planning outdoor activities. Includes hourly and 7-day forecasts.
- AI lightning prediction
- Real-time heat risk metrics
- Current and future radar maps
- Smart push notifications
- Hourly and 7-day forecasts
- Customizable warning settings
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FLASH predicts lightning before the first strike. With a patented algorithm infused with Deep Learning, you'll always know when to head inside, and when it's safe to head back out. Whether you are outdoors for work, training, sports, or recreation, FLASH is your edge against the elements. LIGHTNING PREDICTION LIKE NEVER BEFORE Our patented algorithm, infused with deep learning, forecasts where lightning will be before it hits. - Live Activities let you track the storm from your Lock Screen - FirstStrike tells you when the strike will be in your backyard - All Clear gives a simple yes/no answer to "Can we go back outside?" - 5 Hour Lightning Forecast gives extra time to decide on afternoon & evening plans CURRENT AND FUTURE RADAR High resolution current and future radar with lightning, watches and warnings, plus Flash Weather's FirstStrike, All Clear, and Lightning Probability forecast maps. - Up to the minute current radar and current lightning - 18-hour future radar in 15-minute increments, updating hourly - FirstStrike, All Clear, and Lightning Probability maps updating every 2 minutes SMART PUSH NOTIFICATIONS Get alerted when lightning is detected or forecast near you. - Forecast-based warnings before a strike - Customizable lightning proximity alerts for every saved location NFHS-STANDARD, EXCLUSIVE HEAT AND WBGT FORECASTING Plan your day with real-time WBGT readings, critical for outdoor safety. FLASH also forecasts heat stress 7 days out so you can avoid dangerous conditions before they start. - Live WBGT values for your exact location - Heat risk color coding for easy interpretation - 7-day forward-looking heat stress outlook HOURLY AND 7-DAY FORECASTS High and low temperatures, precipitation chance and amount, wind, dew point, cloud cover, and UV index. - Hourly and daily forecasts out 7 days - Graphical temperature, precipitation, and wind outlooks Developed by Flash Weather. Learn more at flashweather.ai Questions or suggestions: support@flashweather.ai Some features require a Flash Premium subscription. After a 7-day free trial, Premium is $3.99/mo or $39.99/yr. Privacy Policy: https://flashweather.ai/privacy/ Terms of Service: https://flashweather.ai/legal/ Auto-renewable subscriptions are governed by Apple's standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Nullschool
Visualize global weather, ocean, and pollution data on an interactive map. Explore current conditions, forecasts up to 5 days, and historical data. Discover atmospheric phenomena like hurricanes, jet streams, and pollution spread.
- Interactive animated global map
- Wind, ocean, and pollution layers
- Current conditions and 5-day forecasts
- Historical data access
- Aurora and wildfire tracking
- Subscription for extra features
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The official app of the popular website earth.nullschool.net! Explore wind, weather, ocean, and pollution conditions, as forecast by supercomputers, on an interactive animated map. Numerous features are available: - Current conditions, forecasts up to 5 days (depending on the data source), and historical data going back many years - Physical layers: wind, temperature, relative humidity, wet bulb temperature, precipitation, MSLP, CAPE, and more - Chemistry and aerosol layers: PM 2.5, CO2, sulfate, and other pollutants - Ocean layers: waves, currents, swells, sea surface temps, coral bleaching - Aurora - Wildfires Explore Earth's atmosphere and oceans wherever your curiosity takes you: - Watch how hurricanes and typhoons form and pull heat from the ocean - See the jet stream and polar vortex - Follow the Kuroshio, Alguhas, and Gulf Stream - Learn how pollution spreads across the globe This app offers paid subscriptions so you can help Nullschool keep the lights on and develop new features. Plus, you get some neat extras: - Curate a gallery of favorites - Save and share screenshots - Generate QR codes for easy linking Who knows what you're going to find?
Screenshots
Verdict
The clearest difference is rating: Nullschool at 5.0 against Flash Weather's 4.4. Nullschool also leads on review sentiment (100% vs 65%). Flash Weather's advantage is monetization model (free vs freemium) and update cadence (fortnightly vs monthly). On price, ads, in-app purchases and chart position 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. Flash Weather sells 2 in-app purchases, starting at $3.99 per month and Nullschool sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
Nullschool holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 103 and 27 respectively. Written reviews point the same way: 65% of Flash Weather's written reviews are positive against 100% of Nullschool's.
Flash Weather ships an update fortnightly, Nullschool monthly. The most recent releases landed on October 16, 2026 and October 19, 2026 respectively.
| Parameter | Flash Weather | Nullschool |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (103 ratings) | 5.0 (27 ratings) — better |
| Positive reviews | 64.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 103 — better | 27 |
| Update frequency | Fortnightly — better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Freemium |
| Best chart rank | #167 | #118 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 72 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Flash Scientific Technology | Nullschool Technologies Inc. |
Customer experience
Flash Weather
Nullschool
In-app purchases
Flash Weather
- Flash Premium Monthly7 Days trial$3.991 Month
- Flash Premium Yearly7 Days trial$39.991 Year
Nullschool
- Monthly Plan$2.991 Month
- Annual Plan$29.991 Year
- Friends of Nullschool$49.991 Year









