Terrible, not ready at all!
Compared to the previous TomTom apps, this new version is very bad, much worse. User interface looks bad, there is less functionality, some of them critical (such as find alternative routes), takes much more storage space (hell for 16GB iPhone users). Only advantage is the included traffic info. Oh, and the 3D buildings look terrible!!! They are so small you have to squint (and distract yourself from driving) to recognize anything.
amteixeira about
TomTom GO: Navigation, Maps, v1.1