1b:T402,The most downloaded Altimeter for Android that does not need internet to work! - Altitude estimation with three different methods to be always sure to get a reliable measure, even without internet connection. - Historical charts to see your excursions elevation gain. - Maps with peaks' name and contour lines. Pick elevation from any point on the map. - Pictures with impressed place name and altitude. Altitude can be estimated: - With satellites triangulation. Slow and less accurate but it works even with no internet connection. - Taking the ground elevation at your current position from a global elevation map. - Using the pressure sensor of your device (if available). It calibrates itself on pressure from the nearest weather station to improve accuracy. As additional PRO features you can also: - compensate systematic error of pressure sensor - download a larger area of the global elevation map - record altitude without opening the App - pick elevation on the map with no limitation - have no advertising1c:T439,The most downloaded Altimeter for Android that does not need internet to work!

- Altitude estimation with three different methods to be always sure to get a reliable measure, even without internet connection.
- Historical charts to see your excursions elevation gain.
- Maps with peaks' name and contour lines. Pick elevation from any point on the map.
- Pictures with impressed place name and altitude.

Altitude can be estimated:
- With satellites triangulation. Slow and less accurate but it works even with no internet connection.
- Taking the ground elevation at your current position from a global elevation map.
- Using the pressure sensor of your device (if available). It calibrates itself on pressure from the nearest weather station to improve accuracy.

As additional PRO features you can also:
- compensate systematic error of pressure sensor
- download a larger area of the global elevation map
- record altitude without opening the App
- pick elevation on the map with no limitation
- have no advertising