Storm! vs ATSU
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Storm!
This app estimates the distance of lightning storms using a physics-based approach. Simply tap "lightning" when you see it and "thunder" when you hear it to get an approximate distance.
- Lightning strike detection
- Thunder sound timing
- Distance calculation
- Physics-based estimation
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"Storm!" is an app which calculates the distance of lightning storm from your location, based on physics facts. once you see the lightning press on "lightning" button then press on "Thunder" button once you hear the thunder sound. The app will give you your approximate distance from the lightning storm.
ATSU
This app provides comprehensive aviation tools for flight planning and operational support. It features AI-driven decision assistance, detailed runway analysis, and weather decoding to enhance pilot situational awareness and safety.
- AI-assisted aviation decision making
- Detailed runway and wind analysis
- Airport information and offline notes
- In-flight calculators and converters
- SIGMET plotting and weather charts
- NOTAM and METAR/TAF decoding
- Hands-free audio weather updates
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Plan smarter with ATSU — the AI-powered flight briefing and EFB companion built for pilots. Get instant METAR, TAF, NOTAM, and SIGMET decoding, AI-assisted dispatch guidance, and every essential flight tool in one app. Flight Planning & Operational Support • ADA- AI Supported Aviation Decision Assistant introduced • Auto-generated Part A flight planning suggestions • Detects short and narrow runways, calculates maximum crosswind limits • Identifies weather-related threats during planning • Built-in Threat module for enhanced situational awareness Runway Intelligence • Detailed wind component analysis (headwind & crosswind) • Runway slope, elevation, surface type (ASP, CON) • Runway length, width, displaced threshold data Airport Essentials • Airport frequencies and airport maps • Offline/online note sharing with voting system for pilot feedback • In-Flight Tools • Approach path and temperature correction • Wind component calculator, fuel uplift calculator, logbook summation, unit converters ADA Suite (Airmet Detection & Awareness) • SIGMET plotting (thunderstorm, icing, turbulence, volcanic ash, and more) • Great circle flight planner • Prognostic and significant weather charts NOTAM & Weather Decoder • Smart NOTAM classification • METAR/TAF decoding • Runway condition/braking action decoder (ICAO and Russian formats) Meteogram • Visual meteogram charts showing weather trends and forecasts Drive Mode • Listen to latest METARs and TAFs • Audio mode similar to ATIS • Designed for hands-free use Night Time Calculator • Automatically calculates night flight time • Based on great circle route Dangerous Goods Module • Dangerous goods risk evaluation • Firefighting and spill procedures • Drill codes and additional safety considerations
Screenshots
Verdict
The clearest difference is review sentiment: ATSU at 97% against Storm!'s 33%. ATSU also leads on rating (5.0 vs 3.7) and chart position (#80 vs unranked). Storm!'s advantage is price (Free vs $3.99) and update cadence (every 2 weeks vs every 3 months). On ads, in-app purchases and device support 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
Storm! is free to download; ATSU costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ATSU holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: Storm! has 38 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 33% of Storm!'s written reviews are positive against 97% of ATSU's.
Storm! ships an update every 2 weeks, ATSU every 3 months. The most recent releases landed on September 12, 2026 and September 26, 2026 respectively.
| Parameter | Storm! | ATSU |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 3.7 (38 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 33.3% of reviews | 97.4% of reviews — better |
| Number of ratings | 38 — better | 3 |
| Update frequency | Every 2 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Best chart rank | — | #80 — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.4 — better | 18.0 |
| Further details — not scored | ||
| Size | 13 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | Riyad Habash | Mehmet Tufan |
Customer experience
Storm!
ATSU
In-app purchases
Storm!
No in-app purchases
ATSU
No in-app purchases
