This app uses the barometric pressure sensor built into all newer iPhones and iPads and features a Barometer for weather, an Altimeter for outdoor activities and a History feature with CSV export to track air pressure.

No ads, no internet connection, no trackers! Runs on your device only!

Keep an eye on the barometric pressure and be your own weather forecast! This little app uses only GPS (optional) and the barometric pressure sensor to calculate the barometric pressure used in weather forecasts. iPhones and iPads have a barometric pressure sensor built in so this app works completely without internet. The handy marker helps you keep track of changes in the barometric pressure and lets you predict weather changes! Air pressure and its change over time is a very good indicator for weather!

The History allows you to store pressure values over time and compare. With a single click you can export it all as a CSV file.

The Altimeter helps you track your altitude changes based on the change of pressure. Just set your reference pressure and altitude in order to use the Altimeter for checking how high up the mountain you have climbed (works for other activities too). Most users will simply rely on GPS for altitude information but GPS does use a good bit of energy, so this app does not rely on GPS for the Altimeter and can help you gain an estimate, even with GPS disabled (by default the App does use GPS for calibration, configurable).

Features
- Barometer for weather.
- Altimeter for height estimations.
- No internet connection required since the sensor is built into iPhones and iPads.
- No ads! No data collection beyond your device (history and settings). No web communication at all.
- Data export in CSV Format.
- Supports 6 selectable units for air pressure hPa/mBar, inHg, mmgHg/torr, atm, psi, kPa.
- Support for 2 different altitude units, meters and feet.
- Marker and History so you can track changes in barometric pressure
- Manual altitude setting or automatic altitude updates based on GPS for the Barometer.
- GPS Correction. In case your GPS seems to always be 'off' a little you can now fix this easily.