You’ll load a picture into the app, which turns it to black and white. Afterward, you’ll be able to pick from different sizes and shapes of brushes and “paint” on your image, removing the black and white and revealing the original color of the image underneath. What this ultimately leads to are some striking images where the focus can be placed on one particularly colorful object, while the rest of the photo remains in black and white.
If you add some color where you shouldn’t, you can reverse it at any time, without starting over from scratch. To help you avoid making a mistake in the first place, you can zoom in and out on your images, and go into an alternate view mode where colored objects highlight with a red tint, allowing you to better distinguish the boundary between the colored areas and the black and white areas, to the point where you can work on individual pixels for the greatest detail possible.
When you’re finished, you can send your new artwork to Facebook, Flickr, or send it to friends in an email.