Great for upscaling images!
I purchased a lifetime deal on Pixlr a couple of years ago and I've been enjoying using it to create designs for social media: it has a built-in background remover, plus tools to help you tweak an existing image, heal blemishes, uses AI to blend backgrounds to smooth over issues, swap out colours, and more. I especially love being able to take an AI generated image from another app and using Pixlr to tweak it, and then upscale it so I can get high quality images to use on merch sites! Super easy, and high ROI on that one aspect.