PicMixer

PicMixer is the last collage photo editing app you will ever need!

Here are some of the features:
- Multi-touch photos in collage
- Photo frames
- Double tap to edit individual photo
- Enhance Photos in Seconds
- Apply Endless Effects (Vivid, Aqua, Strato, etc.)
- Add Amazing Stickers
- Crop, Rotate, Flip
- Adjust Brightness, Contrast, Saturation & Colors
- Draw and Paint on Photos
- Add Text with Ease
- Red Eye Remover
- Sharpen and Blur Filters
- Import and Export High-Res Images
- Smile Whitening
- Blemish Remover
- Multiple Share Options (Facebook, Twitter, Mail, etc.)
- Universal app

Check out some great screenshots.