POIPIKU is a free Android application developed by pipa.jp that allows casual artists to share their illustrations without worrying about ratings from others. The name POIPIKU comes from the Japanese word "poi" which means to toss or throw something easily.

The application provides an illustration box for users to post their work, and they can choose to share it publicly or with a select group of friends. Users can also browse through other illustrations posted by the community and leave comments or reactions. POIPIKU encourages users to have fun and be creative, whether it's doodling, practicing, or just throwing their ideas out there.

Overall, POIPIKU is a great platform for casual artists who want to share their illustrations without any pressure. It's easy to use, has a simple interface, and provides a fun and supportive community for artists to connect and share their work.