【實用運動app】Race Messenger|最夯免費app-綠色工廠好玩App

Attach a phone or a tablet to your car and receive lap time notifications on the screen with this app. The lap times will be read aloud and displayed clearly on the screen.

Other features are to request the driver to return to pit and to save and share recorded lap times. The messages are transmitted through internet connection. No sign up needed.