Within the app, you can do everything from editing RAW images to creating multi-layer compositions (and much, much more). Affinity is engineered to enhance the workflow of professional photographers, designers, and digital artists, but don't let that scare you away if you're interested - its interface and tools are intuitive enough for a beginner to use, making it super easy to amp up your images no matter your skill level.
In fact, its iPad version actually won App of the Year back in 2017.
Like Pixelmator, Affinity Photo is a pro-level photo editor often praised for its sophistication and versatility.