What are some alternatives?
When comparing Affinity Photo and Pixlr, you can also consider the following products
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
GIMP - GIMP is a multiplatform photo manipulation tool.
Pixelmator - Pixelmator is an image-editing application for Mac and iPad.
Sketch - Professional digital design for Mac.
Photoscape - high quality photo editing software, that enables you to fix and enhance photos.
Adobe Illustrator - Adobe Illustrator is a vector graphics editor.