What is the best app for tracking, like a pedometer?

[Turnpike]

I'm looking to start walking, adding distance each day, and because part of the walk would include a train ride to get into the city (walking is more interesting in NYC) I prefer to use an iPad, so I can read or watch stuff during the hour+ train ride each day.

How accurate is the iPad as a distance tracker or pedometer? The price of an app is not a concern, but accuracy is. While walking I'd keep it in a backpack, so GPS would probably be best, right?

Price is not an option, and it can disable while on the train while I use the IPad for other applications. Any help from those "in the know" would be GREATLY appreciated!

 

[HengenJL]

if you intend to use GPS to track your progress you will need a 3G enabled iPad. then do a search for Nike+ GPS on the App Store. I use the Nike+ GPS app on my iPhone and it works quite well for outdoor use. if I try to use it indoors I find that it does no get a strong enough signal for accurate measurement. luckily the iPhone has the built in Nike+ app and I have the Nike shoe sensor. http://www.apple.com/ipod/nike/