A simple app that tries to free up space taken up by caches on your Apple TV by first filling the disk with random data and then deleting it, allowing you to transfer large files and make the most of your Apple TVs storage. This process takes some time so there is a snake mini-game to entertain you while you wait.
Apple TV is designed to cache lots of different kinds of data. Movies, iCloud photos, screensavers all take up disk space until it is claimed by apps. Then they are automatically deleted.
However, some apps, like VLC, check for free space before writing. This prevents you from using the disk space that is utilized by caches and could be freed. As a result, you can not transfer a 2Gb video to your 64Gb Apple TV even though 2Gb could have been easily freed. By this app.