Tomtom app is awful on iphone.
i was a huge tomtom fan. When it was not availiable on the iphone i got a HTC touch HD and got Tomtom 7 on it. It was flawless, to this day is a great app and super accurate.
Got Tomtom on the Iphone 3GS last week and its pathetic to say the least. Its just such a bad experience compared to tomtom 7 on the HTC that i quickly got a refund. Its runs very slowly, its about 1-2 streets behind at time and this is walking, it often gets lost and re-routing can take a long time and the maps are way out of date. I believe this all comes down to GPS performance, so either the GPS in the iphone is total crap or the software is really badly written. Though having read reviews for navigon and i-go, it seems the GPS could really suck in the iphone.
By TomTom selling a GPS receiver in the mount kinda makes me speculate that tomtom acknowledge the iphones GPS as being an issue hence adding their own.
Given the price of the App and the mount, you would have to be mad to buy this, get a standalone Tomtom, much better reception and functionality.
And if your thinking of getting the Tomtom app to use on the iphone without the mount, be warned its really crap.
Also i have used the navigon app 1.1 and its far superior in its performace. It does a much better job with GPS positioning, but still way way behind tomtom 7 on the HTC. It looks like i will be keeping my HTC for portable navigation duties.
