I am building a web app for studying from PDF documents called RinKuzu, and today I would like to ask everyone to try it out and give feedback.

The idea came from my own experience while preparing for exams: there are so many materials, from slides to PDF textbooks, but often I don't know which parts to study first and which areas I am weak in. Creating questions for practice on my own is also quite time-consuming.

With RinKuzu, users can upload PDF documents to:

• Quickly create quizzes from the materials
  Upload a PDF and start practicing with questions generated from that content.
• Organize knowledge into a learning path
  The system analyzes the topics in the document, identifies foundational knowledge, and suggests an appropriate order for studying.
• Focus on weaker areas
  After each answer, RinKuzu will adjust and recommend what content to practice next, rather than just creating a fixed set of questions.
• Track learning progress
  You can review what has been learned, identify weak areas, and continue the ongoing study session.

What I want to try to do differently from conventional quiz tools is not just to stop at generating questions, but also to try to answer:

“After this question, what should the learner practice next?”

RinKuzu is currently suitable for students preparing for exams, learners pursuing certifications, or anyone with existing PDF materials who doesn't know where to start studying.

If you have children, siblings, or relatives who are studying middle school, high school, or university, feel free to share it with them to try out. I really want to know if the product is understandable and user-friendly for the average learner, not just for tech-savvy people.

The website is currently available for experience and has a free plan.

Experience link: https://www.rinkuzu.app

Thank you all very much! Any feedback, even straight criticism, is truly helpful to me at this moment ❤️