Altimeter is a compact tool that measures elevation using GPS and your device's pressure sensor. Altimeter displays current altitude in meters or feet, includes a simple trend graph for recent changes, and adapts to available sensors to provide consistent readings even when offline.

Key features

Altitude readings are provided from GPS and the barometer when available. You can switch between meters and feet, view altitude history and a trend display, and calibrate using local sea level pressure or a known reference. The app requires minimal permissions and offers a straightforward interface.

How to use

Open Altimeter and allow location or sensor access when prompted. Select your preferred units and calibrate if you have a reference elevation or local pressure. Use the trend display to monitor ascent or descent during hikes, cycling, or other outdoor activities.

Accuracy and permissions

GPS altitude depends on satellite reception and barometer readings depend on sensor calibration and weather. The app requests only the permissions necessary for altitude measurement and does not collect personal data.