Gonna Rain? vs BaroWatch Barometer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Gonna Rain?
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A rain app that notifies you if it's going to rain, snow, or hail. I made this app so I know when to walk the dog or if it's going to snow today. It's free. You're welcome.
BaroWatch Barometer
This app transforms your iPhone, iPad, and Apple Watch into a precise barometer. Track atmospheric pressure changes, identify weather trends, and receive storm alerts. It offers full privacy with no tracking or ads, and works offline.
- Precision barometer readings
- Weather trend tracking
- Storm arrival alerts
- Cross-device sync (iPhone, iPad, Watch)
- Offline functionality
- Customizable pressure units
- Home and Lock Screen widgets
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BaroWatch turns your iPhone, iPad and Apple Watch into a precision barometer. Track pressure changes, spot weather trends and get warned before the storm arrives. WHY BAROWATCH • On every device — iPhone, iPad and Apple Watch share readings automatically • Full privacy — no cloud, no servers, no tracking, no ads • Works offline — measurements keep running in the background • Your unit — hPa, mbar, kPa, mmHg or inHg, the way pilots, sailors and meteorologists are used to CORE FEATURES Pressure measurement • Reads the built-in barometer in iPhone, iPad (iPadOS 17+) and Apple Watch • QFE (station pressure) and QNH (corrected to sea level) • Automatic altitude correction via GPS — or set your altitude manually • Optional manual calibration offset Charts & visualization • Line, bar and area charts with smooth gradients • Color-coded bars show falling, stable and rising trends • Adjustable time ranges from 1 hour to 48 hours • Tap any point for the exact value, time and source • Day stripes for a multi-day overview • Freely configurable color thresholds for high and low pressure ranges Apple Watch • Native Watch app with the full chart history • Complications for Inline, Circular, Rectangular and Corner • Background updates keep your readings current Widgets • Home Screen widgets for iPhone and iPad with a sparkline chart • Lock Screen widgets in Inline, Circular and Rectangular Alerts • Local notifications when pressure changes rapidly • Independent thresholds for falling and rising pressure • Adjustable observation windows (15 min to 3 h) and repeat cooldowns Multi-device sync • iPhone ↔ Apple Watch: automatic via WatchConnectivity • iPhone ↔ iPad: peer-to-peer over local Wi-Fi or Bluetooth, paired with a 6-digit code • No internet connection required Background refresh • Optional background location keeps the barometer running while you walk, drive or sleep • Smart wake-up whenever your Apple Watch syncs Privacy by design • Pressure and altitude data stay on your device • No analytics, no third-party SDKs, no ads • GPS altitude lives in memory only — your exact position is never stored Available in 29 languages. Whether you're hiking, fishing, sailing or flying — BaroWatch gives you precise data and full control over your privacy.
Screenshots
Verdict
The clearest difference is price: Gonna Rain? at Free against BaroWatch Barometer's $0.99. BaroWatch Barometer's advantage is device support (3 vs 1). On update cadence, ads, in-app purchases 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
Gonna Rain? is free to download; BaroWatch Barometer costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 8, 2026 and October 31, 2026 respectively.
| Parameter | Gonna Rain? | BaroWatch Barometer |
|---|---|---|
| Price | Free — better | $0.99 |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone | iPhone, iPad, Apple Watch — better |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 1 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Albert Xu | Alf Hellmund |
In-app purchases
Gonna Rain?
No in-app purchases
BaroWatch Barometer
No in-app purchases
Questions
Is Gonna Rain? free?
Is BaroWatch Barometer free?
Do Gonna Rain? or BaroWatch Barometer have ads?
Which is updated more often, Gonna Rain? or BaroWatch Barometer?
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