- Support retina display.
- Open and save images in TIFF, JPEG, PNG, BMP and many other popular formats.
- Support all kinds of tools, including fill, eyedropper, line, curve, rectangle, ellipse, text and so on.
- Support layers.
- Easily add, edit more...
- Support inputing color manually
- Fix some bugs
- OS X 10.6.6 or later