By Hong Zhang
This app is only available on the App Store for iOS devices.
Link: The smallest social network in the world :)
Helps you to keep track of your friends and groups. You can easily create groups on the fly, see where they are.
The best tool if you're at a concert, festival, congress or doing some serious snowboarding or skiing. :)
It's totally free and it will stay free.
Developed by Q42 and Fabrique
What's New in Version 1.3
* More precise location tracking
* Bugs fixed in mapview (users sometimes were ending up somewhere in the Atlantic Ocean)
* Intro flow small improvement
* iOS5 update