Custom Font Installer for MIUI is a free personalization app by developer Mg Ngoe Lay. It's a utility that allows users to sideload and apply custom font packs for Xiaomi smartphones and tablets running its in-house MIUI Android overlay. It supports version eight and up, and multiple file formats.

New font styles

Similar to how Free Fonts for OPPO works, Custom Font Installer for MIUI lets you easily change font styles on Xiaomi-branded devices. The app offers various types to choose from based on popularity and even some colored ones. Pick one to download and you can apply it immediately after.

Custom Font Installer for MIUI also has a dedicated section for different emoji designs that you can also utilize for messaging and other applications. All that being said, though, the same functionality is already built-in into MIUI, making the app a bit redundant and unnecessary in most cases.

Okay but redundant

In summary, unless you're running an old version of MIUI or having issues with the built-in font changer, Custom Font Installer for MIUI is a redundant solution that does the same thing. It works as it should, but try MIUI's native function first before resorting to this one.