Accelerometer Extra will show you the phones current acceleration. The force of gravity on Earth causes acceleration to all things with mass within its respective sphere of influence. The force has an approximate value of 9.81 m/s^2. Please note, the precise strength of Earth's gravity will vary depending on your location due to earth not being perfectly spherical, the rotation of Earth and having different density values around the world. This app's accuracy will vary based on your phone hardware and your location.Thanks for Downloading our Apps!.