Rainbow Photography app for iPhone and iPad

With Rainbow Photography, its so simple to create colorful pictures.
Supports 7 solid colors and lovely 7 gradient colors. (Updates will be added.)
Images can be used as the original color and grayscale.
Select a color and adjust the image then create your own great photos.
Have fun!

Features
- 14 Rainbow color filters
- Contrast and Brightness control
- Vignetting control
- Supports image crop
- Direct email, twitter, facebook and tumblr support

Video review is here.
http://www.youtube.com/watch?v=C9bSlW2rZlw