Firstly you need to offer an option to save a high resolution image to the iPhone albums (sometimes people just need a basic photo scale & fix perspective app too). Secondly in version 2.2.5 of this app your image tweaking functions have the wrong icons (found using the paint palette icon on the Add Header screen after snapping a photo). The image sharpness icon (vague icon — top icon on the slider row) is controlling the image brightness. The middle row slider has a Image Brightness icon, but is controlling the Image Contrast. The bottom icon is the one for Image Contrast and it does nothing. You can probably skip the smooth image rotation animation on the Add Header screen too, it is pretty, but very slow unless you plan on adding a Fine Adjustment image rotation option rather than a simple 90° spin. The text under the Enhance Color screen has a non-English line at the bottom which needs fixing for English usage.