Pascal Barometer vs Barometer

Track atmospheric pressure and predict weather changes using your device's built-in barometer. Pascal transforms your iPhone and Apple Watch into precision barometric instruments. Monitor pressure trends, receive storm warnings, and get weather predictions — all computed on-device with no internet required. FEATURES • Real-time pressure monitoring with 12-hour trend charts • On-device weather forecasting using the Zambretti algorithm • Storm alerts via push notifications • Live Activities showing pressure on Lock Screen and Dynamic Island • Flight mode with cabin altitude tracking • iOS widgets (small, medium, large) and Apple Watch complications • Hybrid calibration system for accurate readings PRIVACY FIRST All data stays on your device. No accounts, no cloud sync, no tracking. Location is used only for GPS altitude calibration and is never stored. TECHNICAL Pascal uses Apple's Core Motion framework to access the barometric sensor, delivering sub-Pascal resolution. The hybrid calibration system combines GPS altitude with relative altitude tracking to filter out elevation changes and surface true weather signals.

Barometer shows the current air pressure from your iPhone's built-in sensor on a simple analog dial. The needle points to the current reading, with the exact value shown in hPa below. No setup, no account — just open the app. FEATURES • Live atmospheric pressure from your device's barometer • Clean circular dial with an animated needle • Clear numeric reading in hPa • Simple dark interface Handy for sailors watching for weather changes, keeping an eye on the forecast, or just seeing the current pressure.