The first of out games like Pokemon is Mighty Monsters.
This game like Pokemon is for iPhone and IPad
Mighty Monsters allows you to find and use different monsters, just like Pokemon. The monsters are really awesome too. They range from a rabbit that throw ninja stars to a fire-breathing dragon. You can catch, train and fight these monsters, as you would expect from a game like Pokemon.
Also, as with all good games like Pokemon, evolving your monsters is a big part of the game.