This is a simple program that takes advantage of the WaniKani API to retrieve various user information. It works on Windows, Linux and macOS.
No binaries are currently provided, so you need to compile the program yourself using Qt.
Some of the ideas crome from elsewhere (e.g. https://www.wanikani.com/chat/api-and-third-party-apps/1608 for the wallpaper).
Note: the icon used for the application comes from https://blog.wanikani.com/ (which, hopefully, is fine to use...) while other icons come from the Oxygen library, which is released under LGPL v3.0.