I really hope this works out for you! If you have any trouble with the tool feel free to reach out. I suspect this thing will go through a couple waves of improvement over time.
Oh, gosh, um. Wow! No obligation to credit even if you do use this but if you wanted to be thorough you could say something like "some brushes created with Dither Lab" with a link back here so people could use it in their own projects if they wanted to? That might be neat.
Good luck with your future projects :D