Decolorize lets you create dynamic black and white photos with selected areas of color by simply brushing in the area of interest, right from your photo library.
*** iOS 8 photo extension ***
Some awesome features:
- Selective color painting
- Photo library extension
- Pan and zoom mode
- Interactive brushing
- Multiple undo
- Save at high resolution
- Share to the Album, Email, Facebook, Flickr
Check out some screenshots.