Assets Generator Plus lets you quickly create icons for iOS, OS X, and Android. Just drag-and-drop your icon onto the app, and click create asset catalog.
- Automatic image-naming
- Support for OS X icons
- Support for Android icons
- Support app icons for iOS devices (iPhone / iPad / iPod touch)
- Support for all popular iOS versions (iOS 6.1 and prior / iOS 7.0 and later)