Excellent with some objections

The app works well. It is quick, accurate, and free. On the other hand, it is cluttered with ads and useless features like flashlight, weather, and camera. The persistent Google ad pops up covering the whole iPhone screen. Until you find the little X and kill it you cannot get any information from the app.

It has a max speed reading with an X that presumably would reset the reasons but dose not do anything. A current speed would be more useful in any case.

Callahan66 about Altimeter GPS & Barometer, v4.51