Waterlogue: App for turning photos into watercolors

I've recently become obsessed with Waterlogue, an Iphone-only app that takes photos and transforms them into watercolor-style images.

It doesn't allow for any tweaking of brush size or anything, but the effect is pretty striking. (Thanks to Amy Burvall for introducing me to it!)

There's a gallery of watercolored photos over at the Waterlogue site.