Adobe released a new Photoshop app for iPhone users today. Photoshop.com for iPhone allows users to edit photos from both their phone and their online library on Photoshop.com. Adobe’s Photoshop.com online service has a 2GB limit for free, which can be expanded with an annual paid storage plan.

But what is really cool is the Photoshop.com iPhone app. The app is free and offers basic tools such as crop, image rotation color controls, and simple one-touch filter effects that can be applied in real-time. With just a flick of a finger an effect can be applied. Don’t like the effect? No problem, just touch the undo button. The app works from gestures, simple finger swipes change the effects. This is the best mobile phone photo editing app I have seen. And it’s free. And you don’t have to be a Photoshop whiz to use it. Ok, you can’t create an alpha channel, or remove a zit, or whiten teeth (insert a smile here), but for simple, on-the-go effects, it can’t be beat.