It is weird how there's no set standard for map navigation with multiple companies. For example I never cared for Telenav and one thing it did frequently was show you driving off the grid with the road on one side but showed "you" driving through houses and woods and whatever lol, same exact glitch on the new Ford Explorers which are Telenav based, would show you driving offroad through the map grid though they had a recent update after so many complaints, not sure if Telenav fixed that. Or once I pulled out Nav on the GSII as the unit in the Explorer got confused with wrong directions in an area in Miami.... Google Nav for the win lol.
Waze was flat out screwy as well, punch the same directions into Navigon and it would give me different directions and route taking that made no sense, even at times telling you to get off the highway way earlier and drive through city streets and turns that made no sense to the destination unless you wanted to add a ton of time to your trip, or getting off the highway, drive through city, and eventually get back on highway... wtf?!?! lol. Every once in awhile I would pull it out on the iphone just to see what it would say, vs Google Nav, same thing... generally a route that made no sense.
It depends on who licenses what from who. I just can't believe TomTom doesn't have a street in Boston. It's not like I was in the middle of nowhere, and if there's place you NEED GPS, it's Boston.
I am also pissed (again) at TomTom. We had a TomTom hardware GPS, and they wanted $70 to update a several-year-old GPS, which was completely ridiculous, so I said forget it, and now the thing is becoming less and less useful, especially with highway interchanges that have been rebuilt.
Now, I looked at the app, and I have the USA one, which is $50. There is a USA and Canada one for $60. Turns out there is no way to upgrade the USA one to USA + Canada for $10-$15 or something, you have to buy a whole new one, like Canada + Alaska for $50. I have pretty much had it with TomTom and their antics. Also, they charge for traffic data on the iPhone app, but it's free for life on the standalone units. A standalone unit that costs them a bunch to actually make and ship, sells for like $120, and uses data they paid for, includes lifetime traffic, but the iPhone version that costs them nothing to make and ship, uses data I paid for (not that traffic uses a lot of data, it's just the principle of it), and costs $50 doesn't. WTF TomTom???
They make generally good products, but their little antics are just pissing me off to no end. I am definitely going to keep using TomTom on the iPhone, but the chance of me buying another product from them are decreasing steadily.
Google Nav seems to actually be the best, except for it's inability to do travel via, and it's lack of pictures to show lane changes. I wish Google would port the turn-by-turn part over to the iPhone.