What's impressive is that the number is for unique users, not total downloads. That means Apple has received $4.99 more than a million times from consumers eager to get their hands on what is now one of the most powerful photo-editing apps for iOS.
iPhoto for iOS provides a number of features previously available only on third-party apps, including a variety of editing effects and sharing options. You can pick up iPhoto for iOS on Apple's App Store for $4.99.
If you want to get to know iPhoto for iOS a little better first, check out Jason Cipriani's "Getting started with iPhoto for iOS" on CNET.
Are you a fan of iPhoto for iOS? Do you prefer another photo editor app? Let me know in the comments!