Touhou Cirno LWP is an interactive live wallpaper for Android devices created by Yoli-chan. The app features Cirno, a character from Touhou Project, surrounded by falling snowflakes. The wallpaper is customizable, allowing users to adjust the speed and direction of the snowflakes, change the number of snowflakes, and enable or disable the display of snowflakes. Users can also tap on the snowflakes to make a circle of nine appear, which can be disabled if preferred.

In addition, the app offers the option to change the frame rate to improve battery life and enables users to display or hide the snowflakes. It is worth noting that scrolling is not available on certain Android devices. After installing, users can easily apply the wallpaper by opening the app, selecting "Set Live Wallpaper," choosing "Touhou Cirno LWP," and clicking "Apply/Set Wallpaper." While the app is free, it is supported by minor ads in the splash and settings screen, which can be closed by clicking the "X" in the top right corner of the screen.