The market for navigation software is a lucrative niche in the App Store. The Navigon, TomTom, and other Mappy are often at the forefront in the ranking of the most profitable applications. Following the release of IOS 3 which allowed finally to this type of software to comment on the iPhone, we published a comparison of four major programs of that time. While many people will end up on the road in August, we decided to set foot in the stirrup. For several weeks, we tested the following software: Navigon MobileNavigator 1.8.2, TomTom 1.8, CoPilot Live GPS Mappy Premium 9 and 1.3.