I'm having a great time with "Mega Run" at the moment. It's a one-touch jumper that gives a great felling of old-school platformers like Sonic. It doesn't have the unique mechanics of your game though.
It's in review now, and yes, the trailer was unlisted for a reason -- we're waiting for the app to get approved
Mirrors edge only required one finger, and allowed control of the character in all directions. It used swipe mechanics rather than tap
Gravonaut. One of the hardest one-touch platform/runner/gravity games I've ever played. The single touch switches gravity, so maybe this isn't the kind of game you're looking for as it's not precisely a platform game. [edit] And, of course, now that I check it and don't rely just on my memory, it isn't a one-touch game. Sorry.