Another vote for auto-loss less saving.

Perhaps instead of auto saving upon rotation, make it save when user navigates away from the image after doing the rotation. This will save some CPU cycles compared to saving it after each rotation. I.e. if the user rotates it CW 90 degrees 3 times to get it correctly orientated, if it were to auto save only when the user navigates away from the image, this will be better than doing it 3 times.

Also, is there a reason that rotated & saved pics show up in their original orientation if quickly navigated back to them? This can be a headache when you are rotating many images and not sure if you missed a few... I assume it has something to do with pre-caching.