Initial commit. The purpose of this application is to rescale images for iPhone & iPad apps, it includes all the image sizes I could find (24 in total) and with the help of imgscalr  (http://imgscalr.com), it does a pretty good job of rescaling images. You obviously won't want to use all of the settings in one go, but you could break things down into separate lists.
Merge branch 'master' of https://github.com/simsam7/iOS-Apps-Image-Scaler.git