Here is a link to CropaRatio on the App Store (via iTunes)
The features of the iPad version of CropaRatio are listed below:
- Select part of an image with a single-finger drag against a white background.
- Match a desired aspect ratio.
- Move the selected area around within the image.
- Save the cropped area to the Saved Photos album.
- Rotate the image by 90 degrees before cropping.
- Paste and crop an image which has been copied by the Photos application.
- Permanently rotate and save images.
- Useful aspect ratios appear as you are cropping and make adjustment easier.
- Access in-app Help.

