If you're using your iPhone to capture pictures then upload directly online to sites such as Flickr, then having them in the best shape possible before transfer is important. One of the easiest ways to improve just about any photograph is to crop it. This is especially true with cameras sans zoom lenses, such as the iPhone.
Cropulator does exactly that. It provides easy to drag handles that lets you quickly crop an image, then saves a copy of it to your camera roll with a new sequential file name. You have both the cropped and the original images there waiting for you. It also provides an aspect ratio lock, rotation, straightening, and a help page.
If the iPhone is your pocket photo studio, then Cropulator is a must have app. You can get it in the App Store for 99 cents.
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