There is also a free version where all functions can be used for free. The only difference from the paid version is the presence of ads. Please allow storage permissions. I can only Japanese. I use the translation. Canvas size can be set freely from 1 to 1000 pixels.
Esukeapp is the creator of the app that can be found in the Tools category. 8bit Pixel art Painter has been downloaded and installed by over 1K users and its most recent update is dated Oct 13, 2020. Users rated this application 4.5 on Google Play.