tom tom is far the best navigation software i've ever used. but the iphone version needs just a few improvements. 
What about overheating? I assume that since the cradle has it's own GPS chip, the phone does not get as hot, but at the same time, it is in a cradle and not in the open air where it can dissipate heat. Also, does it fit in the cradle with a carrying case on the phone, or does the case need to be removed first? Where do we get the cradle from?
TomTom sucks at getting addresses from contacts. If you have an apartment number in the second address line it doesn't understand the address and makes you enter it manually.
So, specifically, I'm interested in whether TomTom ( and the others) require more power than the feed can supply
I've personally found TomTom a bit buggy with POI's.
Once such incident had me arrive at a POI only to find it non existent. Launching Navigon revealed I was several blocks away from the actual location (and Navigon got me there just fine).
Haven't tried many other POI's so I'm not sure if that was the only one.
It has great potential but seems a bit rushed out the door. Also no TTS makes this app lukewarm at the moment.
Text to speech allows street names to be read to you through the GPS. In short...
Instead of hearing "Turn right at the designated intersection in 100 yards..." it would say "Turn right and Thompson street in 100 yards..."
The two major players for the iPhone, Navigon and TomTom do not do this at the moment but I'm sure it will come one day. However I do not know when or if it will come with a price tag. I don't own the TomTom but the Navigon does read off road names for some highway intersections/exits. Albeit this is very limited.
What about overheating? I assume that since the cradle has it's own GPS chip, the phone does not get as hot, but at the same time, it is in a cradle and not in the open air where it can dissipate heat. Also, does it fit in the cradle with a carrying case on the phone, or does the case need to be removed first? Where do we get the cradle from?
Thank you.![]()
TTS for Navigonis coming in v1.2 of their free software update, which has already been submitted to Apple for approval.
The announcing of major highways as well as highway numbers is already working well everywhere in Texas, Louisiana, and Mississippi.
MacRumors and most other sites completely ignore possibly the best GSP application for the Iphone:
IgoMyWay 2009.
It costs $79 and includes map updates through the end of 2010. I have it mounted on my air vent and I get a good, reliable GPS signal with almost no losses.
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TomTom when I tried it was almost unusably jumpy. Not only did the marker frequently jump off the road I was on, it not infrequently jumped onto nearby roads and recalculated the route from there (and then jumped back). What's odd is that it doesn't seem to have the basic assume-you're-on-the-nearest-road algorithms that most of the others (even the cheap ones) have; the marker keeps appearing on nearby non-road areas. I know that's what the GPS is saying, but almost every other GPS navigator in the iPhone just assumes you are on the same road, going the same speed (Navigon is especially smooth at this; and I think iGO shows a tiny dot where the GPS signal currently is, but keeps your car icon on the proper road). Also annoying, though not as problematic, is that every time you stop at a light, the road, instead of sitting still, twitches constantly -- clearly just a bug, but bizarre to have made it even into a 1.0 product. But the real problem with such erratic placement is that, often as not, one is passed an intersection by the time TomTom tells you to turn; that is not merely annoying, but makes it fairly unusable. As far as I can guess, perhaps TomTom wants the GPS placement to be tetchy, so they can sell you the GPS kit for greater "accuracy." But Navigon, and even some of the other cheaper ones, does a perfectly fine job with the erratic GPS signal. TomTom's implementation is just poor.