[ck2]

If you really want to see all the gps-like services out there and have android, you must play with the open-source GPStest

https://github.com/barbeau/gpstest

I've been fascinated for years how badly GPS does altitude (mean-sea-level)

in the USA they had to build an augmentation system for airplanes for altitude (WAAS)

[nayuki]

Awesome app you mentioned. So far, I was only using the lesser app of "GPS Status" for Android: https://play.google.com/store/apps/details?id=com.eclipsim.g... .