Pixelmator Pro is a Photoshop-lite software for Mac that combines a photo editor, drawing and painting tools in one package. It has non-destructive image editing abilities, as well as tabbed mode, fullscreen mode, and split view support. It also offers adobe photoshop style layers, brushes and tools.
The interface is simple and easy to understand, making it suitable for novices. Furthermore, if you just want to look at your photo without any distractions, there’s a fantastic ‘hidden interface’ option that you can turn on.
Pixelmator Pro is not nearly as feature-rich as Photoshop. It’s inexpensive, lightweight, quick, and enjoyable to use, so it might be right up your alley if you just need to perform basic Photoshop-style tasks on occasion.