What would the world be without having wanikani plugins across all platforms? Pretty much the same as this one but I chose to port the script over anyway. Keeping that nice uniformity theme the crabigator alongside your reviews and lessons are displayed promptly on your Desktop!
Installation is found on my Github.
Nice! I have a couple of Rainmeter widgets on my desktop, and this is a welcome addition! Good job. 
Really nice, thank you!
Would be cool if you could double click it to open the review page in your browser.
Edit:
Just did it myself. Yout just have to add this line to the [Rainmeter] section in the WaniKani.ini
LeftMouseDoubleClickAction=["https://www.wanikani.com/review"]
Sounds awesome! I’ll work on adding this to the original code when I get a chance 
Thanks for this. I liked the original rainmeter code for WaniKani but I’m enjoying seeing the same info in a condensed format and the extra functionality of the double click is great.