Réponse intéressante du développeur d'XCGLOBE / FlyMe :
The altitude you get from most GPS devices is the height above the WGS84 ellipsoid, which is just an approximation of the earth's surface. FlyMe uses EGM96 calculation model to calculate more accurate AMSL altitude. But since some phones have already integrated this calculation, FlyMe calculates wrong altitude.
Last version of FlyMe 4 experimental have option for disabling EGM96 altitude correction. This should solve the issue.
cheers,
aljosa
Testé Flyme 4 experimental. Effectivement l'option de désactivation de la correction EGM96 résoud le problème.
Flyme 4 experimental dispo sur Google Play Store pour ceux qui voudraient le tester.
Pas mal d'améliorations et un très intéressant mode "Marche & Vol" qui enregistre et la rando et le vol.