Waze

Price: Free | Available: iOS, Android, Windows | Maps: Online

Waze is a completely free app that relies on other users’ inputs to warn of hold-ups, accidents, speed cameras, roadworks and just about any other road hazard you may approach. In the past, it only tended to work well in populated areas where plenty of users were live on the app, but today, Waze’s popularity makes it a reliable and detailed source for most of the country. Just don’t expect the same quality as TomTom’s GO or the CoPilot Premium.