Pixelmator:

Pixelmator for iOS is a full-featured image editor that gives you everything you need to create, edit, and enhance images on the go. It lets you work seamlessly between your Mac, iPad, and iPhone and even work effortlessly with people who use Adobe Photoshop.

I love Pixelmator and this is such a great deal, I tried buying it before I realized I already own it. No word on when this deal is up so grab it while you can.