Comparison

Gonna Rain? vs BaroWatch Barometer

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

Head to head
About

Gonna Rain?

Features
Read full description

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.

About

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.

Highlights
  • 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
Features
Read full description

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

Gonna Rain?4 screens
BaroWatch Barometer3 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 8, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 6 level
Gonna Rain? versus BaroWatch Barometer: the parameters behind the verdict, then further details
ParameterGonna Rain?BaroWatch Barometer
PriceFree — better$0.99
Positive reviews—100.0% of reviews
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhoneiPhone, iPad, Apple Watch — better
Requires iOS16.6 — better17.0
Further details — not scored
Size1 MB10 MB
Age rating4+4+
DeveloperAlbert XuAlf Hellmund

In-app purchases

None

Gonna Rain?

No in-app purchases

None

BaroWatch Barometer

No in-app purchases

Questions

Is Gonna Rain? free?
Gonna Rain? is free to download, with no in-app purchases.
Is BaroWatch Barometer free?
BaroWatch Barometer costs $0.99, with no in-app purchases.
Do Gonna Rain? or BaroWatch Barometer have ads?
Neither Gonna Rain? nor BaroWatch Barometer shows ads.
Which is updated more often, Gonna Rain? or BaroWatch Barometer?
Gonna Rain? ships an update every 3 weeks, and BaroWatch Barometer every 3 weeks. Most recently, Gonna Rain? was updated on October 8, 2026 and BaroWatch Barometer on October 31, 2026.

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