WaniKani Review Notifier is a free Chrome add-on developed by Keavon Chambers. This add-on provides a convenient way to stay updated on your WaniKani reviews and lessons. With this extension, you can receive a colored notification icon in Chrome whenever you have radicals, kanji, or vocabulary to review or learn.

The extension places a small, non-intrusive icon to the right of the address bar. This icon turns red when reviews are ready and orange when lessons are available. Additionally, you have the option to set a minimum number of reviews before the icon turns red, allowing you to customize the notification based on your preferences.