BaroWatch Barometer

• 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

• Open standard unit — hectopascals (hPa), the unit pilots and meteorologists use

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.