Yuhimo is a lightweight notes app with a smart learning system. It sits between a traditional notes app and a spaced repetition app: you can store knowledge, organize it, and choose which parts you want to remember long-term.
FAQ
Frequently asked questions.
Everything you need to know about Yuhimo.
Notion is a large workspace with databases, complex layouts, tables, and many productivity features. Yuhimo is intentionally simpler. It focuses on writing, organizing, and reviewing knowledge without turning your notes into a heavy workspace.
Anki is card-first. Yuhimo is note-first. Instead of creating isolated flashcards, you work with pages: small notes, long articles, summaries, concepts, or structured knowledge trees. Any page can become a learning page when you decide it is worth reviewing.
No. Yuhimo does not require flashcards. You can add questions manually, generate them with AI, edit them, or use no questions at all. Questions are only review anchors that help you recall the page more effectively.
No. Yuhimo is based on self-assessment. You review the page, check your own understanding, and grade it with Again, Hard, Good, or Easy. The system then calculates the next recommended review date.
Because real knowledge is contextual. A page can be two sentences or a long article, and only you know which parts matter to you. Automatic grading would either be inaccurate or add unnecessary complexity. Yuhimo helps with scheduling, not judging.
FSRS-light is Yuhimo's simplified spaced repetition model. Each learning page has stability and difficulty values. After every review, Yuhimo updates these values and schedules the next review date based on your grade.
Early reviews are allowed, but the system reduces the reward. This prevents artificially increasing intervals by reviewing the same material too often before it is actually due.
If you review something later than planned and still remember it well, Yuhimo can give a higher stability reward. The logic is simple: if you remembered it after a longer gap, the knowledge is probably stronger than expected.
A learning session is a daily review flow. Yuhimo selects learning pages that are due today or overdue. You review each page, use questions if available, reveal the full content if needed, and grade your recall.
Scoped sessions let you review a specific branch of your knowledge tree. For example, you can choose one topic and review only its child pages, either due-only or all pages inside that subtree.
Yes. Learning is optional. Some pages can stay as regular notes, while others can be enabled for spaced repetition. Yuhimo can work as a simple personal knowledge library.
AI is only a helper. It can draft study pages from a topic, pasted text, or a file, and it can generate questions from a page you already wrote. You review and save drafts; learning stays optional. You can edit, delete, or write your own pages and questions at any time.
It can draft study pages from a topic, pasted text, or a file. You review an outline, then the pages, then save. Nothing is added until you save, and saving does not turn those pages into learning pages. This is different from AI question generation, which only adds recall prompts to a page you already wrote.
Yes, with limits. Offline mode lets you read cached notes, search locally, and view questions and review status. Editing, grading, AI generation, trash, drag-and-drop, and learning sessions require an internet connection.
Yes. Yuhimo supports HTML, TXT, PDF export, subtree ZIP export, and full JSON backups. The goal is to avoid locking your knowledge inside the app.
Yuhimo stores data on the server so your knowledge can sync across devices and browsers. You can also export your data and create backups.
Yuhimo works for programming concepts, language learning, university topics, research notes, articles, personal ideas, medical or biology topics, and any knowledge you want to structure and remember.
Yes. You can use it to structure lecture notes, keep subject knowledge sharp, and review material over time. Yuhimo is a personal knowledge system, not a classroom tool — it does not track students, assign work, or grade a class.
ChatGPT can help generate or explain information, and notes apps can store it. But neither gives you a structured system for returning to knowledge at the right time. Yuhimo combines storage with review planning.
No. The goal is not to replace every tool. Yuhimo is focused on notes, structure, and long-term retention. Extra complexity is avoided unless it clearly improves that core experience.