Originally Posted by Ceverol
TomTom (and Garmin) was king of the GPS hill until the introduction of smartphones. They've struggled to keep up since. It is TomTom's map data that drives iOS 6' maps and navigation app (Apple was desperate; they had to buy something
You may want to try out free 'Waze'. It's a navigation app that introduces another data source besides historical data sources into the mix: realtime crowdsourcing!
Waze - Free GPS, Traffic and Gas App | Waze - YouTube
I tried Waze earlier this year and literally added dozens of roads and made hundreds of other corrections in areas near me. But after reading their tutorial on map editing and all the intricacies that go into it, I suspect a lot of user-submitted map changes are less than optimal (probably including mine too).
Back to TomTom, I think their maps are (or at least were) much better than Apple Maps makes them look. If it becomes general knowledge (outside the tech enthusiast arena) that TomTom maps are at the heart of Apple Maps, and the public believes that Apple Maps is representative of TomTom's map quality, I think TomTom's Android app will be a non-starter with Android users, that is if its severely limited compatibility doesn't kill it first.