Tomb Run is a free clone of Temple Run.
The dynamics of the game are the same: you're being chased by a monsters and are forced to run as fast as you can to escape. Avoid slowing down, dodge the traps, and collect coins along the way.
The coins are useful for getting extra lives so that you can continue the game, buy in-app upgrades or unlock 3 new characters to play with.
Tomb Run is a lot of fun, it's frenetically paced and with a different scenario in each game.