Kanapp is a little application which allows you to learn the Kana. You can also test your knowledge with the Kana quiz! It's the first release, so it may contain bugs. It's an open-source software because I don't have the time to maintain the application. You can get the sources on github: https://github.com/Adopi/kana-app.
What's new in Kanapp
Note: Finder and MacUpdate Desktop don't report a version number for this app. The developer refers to it as version 1.2-en.
Release notes were unavailable when this listing was updated.