Looks like a great app, unfortunately it's Apple only. And you have to dig pretty deep into their website to confirm this suspicion, it's not stated explicitly anywhere - ok, the "Buy" link goes directly to the Mac App Store, but the text itself is written with the underlying assumption that they're only talking about the Apple universe. Would have been nice to clarify this right from the first header, e.g. "Professional image editing tools that anyone with a Mac or iPad can use."