the author of this app says:
*** For all Instagram Lovers!! ***
Squaready is a free application you can crop the photo into square shape.
Not only landscape but also portrait photo can be put in the square area.
❖ highly recommend Instagram users!
✓ Posting a portrait (vertical) photo.
✓ Choose a colorful background.
✓ Easily correct centering.
✓ In app sharing posting to Instagram.
✓ PhotoAppLink support.
✓ And also, it's FREE!
▶If you tap the Ad Banner to view an ad full screen, when you come back to Squaready, the advertisments will be gone for several hours! It's FREE and easy!
[NOTE] If you want, please add hashtag #squaready when you post photos with this App.
What's New in version 1.4.1
✓ Changed the direction of rotation to counterclockwise (same as Instagram 2.0).
✓ Added Info button.
✓ Minor bug fixes.
Version History v1.4.0 (September 17, 2011)
✓ Add support for in-app image sharing service "PhotoAppLink".
✓ Add 2 types of Windowbox fitting positions. (Tap the button of Windowbox)
- Requires iOS 4.0 or later.