You meant robot wants kitty? That has a level editor? Never saw it. It's an amazing exploratory platformer. Should check out the user levels. And the size is like 5.0 MB or something.
There is an in-app purchase to get access to it. I love when games allow the ability to share levels with others. I'm constantly surprised at LittleBigPlanet user created levels. So cool.
Bike Baron which is releasing tonight is a platforming game and has a level editor. Here's the link: http://forums.toucharcade.com/showthread.php?t=110802
Yes - I meant Robot wants kitty. Thanks. The level editor isn't obvious, but it's in there! The level editor in Robot wants Kitty is free and built in. When you click play, scroll to the left of the level selection screen and tap "Kitty Connect". This lets you crate / edit / play your own levels, but not share them with others.
The level editor in Bike Baron is prett well implemented. The Devs used it to make the actual game levels too.