Some of you may remember when we first mentioned SnapScreen as a on device screenshot application. The problem was that the application was limited to OS 4.3+. It turns out that the developers managed to find a way to make it work with OS 4.2.2+ but with one caveat. You will only be able to save the screenshots as BMP files instead of JPG files. BMP files take up a ton of space so this will probably deter some from the application.
There is a free trial for 3 days or 30 screenshots if you want to try it out. You can also pick up the full version for $5.99 at the BerryReview store.