The description of GPS Attitude
The log files can be accessed as using Android File Transfer. The logged data can also be sent via TCP.
An XYZ offset can be applied to the GPS position. Corrections can be applied to the heading, pitch and roll data.
This App uses GPS to determine the position of your smart phone. Therefore GPS must be enabled in the Android Settings. The smart phone should be used away from tall buildings to ensure that a strong GPS signal is received from the GPS satellites.
Disclaimer: The data shown in the App is only as accurate as the GPS position and heading data.