The application is designed to test the sensors of your device.
To use the barometer requires an atmospheric pressure sensor for the compass - a magnetometer and an accelerometer.
On the "Sensors" page displays a list and data received from the sensors (on selection).
For barometer implemented widget (2x1) and the ability to save data specified time interval. Stored and current data of atmospheric pressure are displayed in a graph.
Implemented the ability to displaying a compass on the map current location and magnetic declination for the the selected coordinates.