ArtRage for iPhone is a very popular app for iPhone photography, just recently we interviewed the incredibly MaryJane Sarvis who used this app, along with others, in the image below. ArtRage doesn’t just place color on a canvas, it keeps track of how much paint there is and how wet it is, so you can blend colors under the brush as you paint without changing to a blending tool, or lay down thick lines of pigment for flattening and smearing with the Palette Knife.

Canvas grain affects the look of your strokes, and drier pigments break up on the surface to create textured effects. It’s not just a special effect, it’s…