ツイやつγ font is a font data app developed by mumei. The app is available for free on Android devices and falls under the Social & Communication category. It is designed to allow users to view visible characters that cannot be seen in Android and Twitter. The font data app comes in two versions: Tsui guy γ and Tsui guy γ pro.

The font data app is not a standalone app, and users need to have a compatible app installed on their device to use it. However, it may not be possible to correspond to all the characters, and garbled text might occur in relation to some of the characters. It is recommended to uninstall Tsui guy γ font if you do not like the way the display is. The font data app has been published under the GPLv3 license.