ChatMap is a simple app with a chat allowing you to discuss with your friends, and a map allowing you to see where they are and what they do.
Ou can create channels and invite other members in the channel you wish. You can also give them administrator privileges so that they can invite other members.
Privacy is our concern, we will not share your GPS coordinates with anyone else than your friends, and even better you can choose not to display your location or to be shown at the place of your choice !