TrackServer is a free Android application developed by GPS_Developments that allows you to monitor your GPS devices easily. The app offers several features such as saving login credentials, searching device lists, viewing all devices on a map, battery and charging icons, GPS status, history/report mode, and commands.

With TrackServer, you can quickly view all your devices on a map and select them by clicking on the icons. The battery and charging icons provide helpful information about your devices' power status. Additionally, the app offers GPS status and history/report mode with a StartStop/Detailed Filter.

Overall, TrackServer is a useful Android app for monitoring GPS devices. The app is easy to use and provides essential information about your devices. It is a great tool for businesses and individuals who need to keep track of their GPS devices.