Use Geochat from your Android phone. Send and receive messages from your groups through internet or SMS and see where they are in the map.
The security report demonstrates that the app is totally safe. InSTEDD developed Geochat that falls into the Communication category. On Google Play, this application has been rated 3.1 by its users.
The app was downloaded and installed by over 10K users and its most recent stable update was on May 17, 2012. Take the opportunity to get the .apk installer of Geochat 1.4 for free and read users' reviews on Droid Informer. The installation package takes up 128 KB of disk space and it runs on Android devices 1.6 and above.
Based on the users’ feedback, the obvious drawback of the app is login issues.