Big, very big. No cross device compatibility.

Indeed, very big. I couldnt load it on my Wifes phone unless I was prepared to constantly manage her space usage. I like being able to use it off line however I may end up deleting it and only adding it back when I am heading away on a trip. Also, I am disappointed in that the App wont share routes and places between devices. Using myDrive on my iMac to do some route planning I cannot load new Places or routes to my phone and iPad. I would prefer to have the ability to have that functionality. Its new so I am hopeful improvements will be forthcoming.

Mac4evr about TomTom GO: Navigation, Maps, v1.0.3