Carback Demo play online

Carback is an app for cyclists that detects cars behind and alerts with an audible warning for close, near and far. Ideally paired with your earphones (we do not recommend using both earpieces), audible warnings are for you personally. Not paired and the device speaker will announce to other cyclists and pedestrians around also. Detection photos are saved to your library for later perusal. The free version has a time limit of operation for evaluation purposes. Upgrade to the paid version with no restriction. https://play.google.com/store/apps/details?id=com.tuitio.carbackpaid