Waze is a free GPS application featuring turn-by-turn navigation, developed by the Israeli start-up Waze Mobile for mobile phones. It currently supports iOS, Android, Windows Mobile, Maemo, Symbian, and BlackBerry OS (beta only). Waze differs from traditional GPS navigation software as it is a community-driven application and learns from users' driving times to provide routing and real-time traffic updates. It is also free to download and use, as it gathers map data and other information from users who use the service. Additionally, people can report accidents, traffic jams, speed traps, police and can update roads, landmarks, house numbers, etc. Waze also helps users find the cheapest, closest gas station around them or along their route. As of January 2012, the app has been downloaded 12 million times worldwide. In July of 2012, Waze announced that it had reached 20 million users, half of those gained over the previous six months.