What are some alternatives?
When comparing Krita and MyPaint, you can also consider the following products
GIMP - GIMP is a multiplatform photo manipulation tool.
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
Paint.NET - Paint.NET is a free image and photo editing software.
Microsoft Paint - Paint (formerly Paintbrush) is a simple, ultra-basic graphics painting program that is included...
Pixelmator - Pixelmator is an image-editing application for Mac and iPad.
Clip Studio Paint - Powerful drawing and illustration tool.