It is Altimeter using GPS on the device.

Main Function

1. Indicate current altitude.
2. Altimeter displays elevation change over the past 5 minutes.
3. Selectable color theme.

Instruction

1. Enable GPS.
2. Read measured value.

Reference

- To receive GPS signal, handset must be set under the open sky.
- Use the open sky to receive GPS signal. Not be used in the indoor.
- Can cause signal distortion in places such as skyscrapers or around the wooded place, the measurement error can be turned.
- Depending on the surrounding environment, it may take some time to Initial start-up of the GPS.
- General environment rather than in a special environment (Example: skydiving, measure the height of the projectile, alpine climbing, flying height measurement etc.) that is not suitable.

- Change targetSdkVersion to 29.