Top-Top Group Location Service

Top-Top is a group location service. The idea is very simple: someone creates a group, others join it - and everyone in that group can see each other on the map.
Top-Top can be useful for family members, touring groups, racing competitions, meeting random people, or any other situation where people need to keep track of their mutual position.
Everyone can create their own groups and join other groups.
To join a group, you need to know the name of that group. Groups can also be private and may require a password to join.
Group members can see the positions, speed, height and statuses of other group members. You can put pins on the map to mark important places. Each group has its own local chat.
Groups can be updated in real time, can contain up to 1000 members, and have a duration of up to one month.
Top-Top is 100% anonymous. Top-Top requires neither your phone number, nor your contacts in the address book, nor your email, nor your IP address, nor any other personal information. Top-Top does not collect or save your location after you log out.