This is "Kanji Tree" with a few extra bells and whistles!
* Sound Effects
* User-defined Study Lists
Many people generously offered to donate to Kanji Tree, but when I tried adding an in-app-purchase to allow them to do so, the install rate fell off a cliff.
Therefore, I'm releasing this separate paid version, mainly so people can donate towards the development of Kanji Tree, if they want to.
In return, I've added a few bonus features which people have been asking for, but which I've been reluctant to add to the regular version for various reasons. I want to keep the regular one as slim and fast as possible, so it works well even on the oldest of phones.
I'll be adding more features in future, such as user-specified fonts.