HEAVYPAINT is a free painting app available on Android. Developed by HEAVYPOLY Inc., it boasts a simple yet powerful interface that allows users to focus on pure colors and shapes. The app is ideal for plein air painting, color notes, sketches, and studies.

The app's streamlined interface is easy to navigate, making it ideal for both beginners and professionals. The app's features include a range of brush types and sizes, as well as a color picker that allows users to choose from a wide range of colors. HEAVYPAINT also offers layer support, making it easy to work on multiple elements of a painting at once.

Overall, HEAVYPAINT is a great option for artists of all levels who are looking for a simple, yet powerful painting app. With its focus on pure colors and shapes, it is an ideal tool for plein air painting, color notes, sketches, and studies.