This app always knows and uses the current location even when running in the foreground as well as in the background. This is a trial version with a limited time limit. This app is a full-featured Trial version. Approved CIVL flight instrument for FAI Category 1.(https://www.fai.org/page/civl-xc-instrument-accepted) Variometer, Vario, G_Vario, G_Variometer, Tracker (Compatible for GPS only or Phone Baro Sensor or FlyNet2 or BlueFlyVario or GoFly Pico), 3D Track View with 3D terrain maps. Parag