1. Regarding the problem of having to review a lot of cards, this is actually somewhat inevitable. Still, Note Garden made several attempts to alleviate this problem as much as possible. For example, you can choose which range to learn very flexibly on demand exploiting a tree structure. In addition to this, we plan to make the content that the user already know not appear in the learning course as much as possible by connecting each other's difficulty measurement between the notes.

2. Regarding the issue of when the product dies, we are also considering making it open source to minimize the harm to learners when the Note Garden can no longer be maintained. And we have already been developing Note Garden for over 3 years. It won't die right away