Aviasoft AltiVario - a GPS alti-vario for paragliding and hang-gliding pilots (Size: 2.57 MB)
My own work. This is a paragliding alti-vario for free-flight pilots. It works on android phones with GPS. No pressure sensor needed. It looks just like a normal pressure-based alti-vario instrument although due to using GPS altitude changes the vario does not detect very slight vertical changes, when scratching in light winds, for example. Works perfectly for stronger lift and thermalling. This was created as a phone backup for the standard instrument.