...As a php+mysql service can be installed on any web server (i.e. your bike-team site!).
It's free, open source, portable and cross-platform.
*** NB ***
- Check the "allow unknown sources" option on your device security settings to setup on Android.
Current version: 0.9 (beta)
Release notes: -> https://sourceforge.net/p/puntogps/blog/
Track your mobile device or cellphone via internet using OpenGTS/GPRMC
...GG-Tracker can potentially hook up to many different apps (iOS and Android) as long as they follow the OpenGTS or Garmin $GPRMC standards. The application itself runs on a standard Apache and MySQL setup.