Sort of. I've used Pic Toon, TzukiSnap and Doodles to add cute details like cat ears or giant shades to the photos. But my favourite ones are the basic photo editing ones like Fotor and Luminance to adjust brightness and contrast or to put a filter over.
A friend showed me all the awesome things you can do with them a few weeks ago, so I downloaded one and have been having a great time enhancing some of our images. The one I got is a free app called Pho.To Lab, which you can upgrade for $4.95 to remove the ads. It does collages, takes away red eye and has various filters and pictures that it automatically cuts and pastes your picture into. It's a lot of fun and a little bit addictive!