Affinity Photo £48.99
affinity.serif.com
Of all the affordable Photoshop alternatives, this is our favorite on the Mac. It packs in layered images, the ability to edit Raw photos, correcting for lens attributes, selectively applying adjustments using gradient masks, and much more. Version 1.5 added a wealth of new features, including HDR images from multiple exposures, 360-degree photo editing, and recordable macros with changeable attributes. The app uses macOS’s Extensions tech to make some of its tools available in Photos.