Pixelmator Pro is actually great for Pixel art as it has its on tool for that exact purpose!Here is the official documentation for this feature: https://www.pixelmator.com/support/guid ... -pro/1041/
And if you ever get into more realistic or vector art, well, Pixelmator does that as well, so certainly a great option for a wide range of uses!
also, thank you for asking that as I didn't know Pixelmator actually had a pixel brush before!