Collects and sells data
The app tracks your location
Unable to be monitored
What Waze says, "Always know what’s happening on the road with Waze. Even if you know the way, Waze tells you about traffic, construction, police, crashes, and more in real-time. If traffic is bad on your route, Waze will change it to save you time."
What SGS says, "Although it may alert you of obstacles on the road watch out for obstacles it may cause in your privacy."