Not worth the $0.99
It doesnt seem to work in the background when you are using the iPhone for something else, like checking the map. Nor does it work unless the display is active ... so the battery is drained with the phone just sitting in your pocket.
If these issue could be solved it would be OK -- but as it is, it just doesnt work as an all-day pedometer.
Aardvark of the north about
Pedometer, v2.9