Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.
Bilingua - Bilingua: your language exchange app & learning companion.
Zenly - Zenly is a GPS tracker to locate your friends in realtime.
LingQ - Learn languages by immersing yourself in a world of interesting, authentic content!
OwnTracks - Cross-platform location sharing
Mondly - Learn 33 languages in 500 bite-size lessons and 14 conversational modules.