I wanted to keep track of my progress in Wanikani and decided to make a screensaver for that. It displays all the kanji and colors those you have leveled in the color of your level (e.g. pink for apprentice). I decided to make the layout adaptive to the screen resolution, so no matter the screen or the amount of kanji, it will scale to fit everything.
A picture is worth a thousand words:
Download link: http://www.mediafire.com/?mzgkrfj5eavm6ya <----
This is a big update, for the changelog check my post on page 7. You still have to enter your PPI. To find your PPI use this link:
http://en.wikipedia.org/wiki/List_of_displays_by_pixel_density#Apple
Use the link as a guideline and tweak your PPI so that the kanji fill the screen ( should not be necessary anymore, but you are free to change the PPI to your own preferences).