The TomTom iOS app was recently updated to be universal (i.e. support both iPhone/iPod and iPad resolution in a single app) and this, combined with yet another navigation argument, was enough to convince me to buy it – at $95 it’s by far the most expensive iOS app I’ve bought (although as a percentage of the total app expenditure it’s not very much!).
I gather the interface strongly resembles the dedicated TomTom hardware. It’s useable, but not as clean or elegant as I imagine Apple’s app will be when they finally reveal it (but I strongly suspect that Apple’s one will be iPhone only, at least at first). Given that most of the time you’re glancing at the map or just listening to the turn-by-turn directions, the interface isn’t overly important anyway.
It’s done well with directions so far – no errors, and easily correcting when mistakes are made. The maps have sufficient coverage even in Warkworth and Ahuroa, and being a proper navigation app there’s no need for a cellular connection (unlike with the built-in Maps app), which is essential in Ahuroa, since there’s barely any coverage.
The app is certainly better than having to rely solely on another person to navigate. Although I don’t often need instructions (since I’m usually driving somewhere I’m familiar with), in the cases where I do, it’s useful to have, and over the course of a year, I think that’s probably worth $100. (The monthly traffic subscription, however, is not – I haven’t even bothered trying this out).
I’ve tried various free/cheap navigation apps, and although they’re ok, they’re absolutely inferior to this one. I’d recommend it to anyone that thinks that they’ll get $100 of value out of it, especially over the next year (it seems very likely that iOS 6 will have a built-in app).