まるかいてフォイ is a unique drawing app that brings a playful twist to your doodling experience. Unlike other drawing apps, this app features a cute character named "フォイ" that appears whenever you draw a circle.

The gameplay is simple - just draw circles and watch as フォイ comes to life. It's a fun and easy game that you've never seen before. But this app is not just for entertainment, it also comes with a save feature, making it a useful memo app or drawing tool. You can save your creations and share them with your friends on Twitter or Facebook.

With over 400,000 downloads, まるかいてフォイ has gained popularity among users. The collaboration with "俺の校長" adds an extra element of surprise, as the character occasionally appears in the app. The developer, aoisenpuu25, has also started a Twitter account to connect with users and share updates.