What photo editing app for iPhone?

There's this cool app that over saturates colors and has like a whitish outline of the main object? Do you know? Its not instagram or any other photo filter edit. I think you have to pay for it. It's like pic something? Anyway I really want to know.

Icamera or something like that.

Actioncan
Lens+
Shape Collage
Pic Collage
HDR FX
Photos Wall
DecoPetit

Hope these can help!