Backed by modern learning science
Ritsu is the AI tutor that trains you to deeply understand, practice, retain, and apply whatever you're learning. Drop in a textbook chapter, slide deck, YouTube video, or paper — and get coached step by step.
Free forever · No credit card · No time limit
Success formula
Most courses teach you what to learn — not how to learn it. Strong learners rely on a system of twelve study habits. Most students use only a few of them consistently.
| Activity | Most students | The top 1% | Ritsu |
|---|---|---|---|
| Reading / watching | Rereading, highlighting, rewatching | Recalling it without looking | Makes you recall as you learn |
| Understanding | Assuming you understood | Asking questions from every angle | Questions you from every angle |
| Study plan | No plan — whatever's due next | A structured path, broken into small units | Builds that path from your material |
| Problem sets | Reading the solution. Or asking AI. | Solving. Checking. Distilling. Applying. | Solve first. Feedback second. |
| Review | Cramming the night before | Review timed to the forgetting curve | Brings concepts back for spaced review |
| Mistakes | Reading the right answer, moving on | Finding the misconception behind it | Diagnoses the misconception, then makes you retry |
| Papers | Reading until you're lost | Rebuilding the argument, step by step | Makes you rebuild the argument |
| Progress | A feeling: "I think I know it" | A score on every concept | Scores mastery concept by concept |
| Practice | Practicing at the end, if there's time | Practicing from day one, at the weak spots | Targets practice at your weak spots |
| Structure | Notes, chapter by chapter | A concept map of the subject | Maps how every concept connects |
| Depth | Taking it at face value | Why. What if. What breaks it. | Keeps pushing with why and what-if |
| Tools | A textbook and a chatbot | A system: recall, spacing, mapping, testing | Runs the whole method in one workflow |
Solution
Put in anything you're studying, and Ritsu will coach you until it's yours.
Your chapter, your slides, your lecture recording. No formatting. No prompting.
The chapter comes back as an ordered path of small units — every item traced to the page it came from.
40+ commands turn learning science into interactive activities. They help you /test, /explain, /quiz, and /solve problems until you understand deeply.
Every concept gets a score. The map lights up as you master it — and what starts to fade comes back before you lose it.
Every course from here on
Build a better way to learn once, then carry it into every course — deeper understanding, stronger recall, sharper problem-solving, and a learning advantage that keeps growing.
Ritsu guides you to understand, recall, question, practice, and apply — the way strong learners study.
Don't stop at “I get it.” Explain it, connect it, solve with it, and use it until you truly own it.
Learn at a higher level — and let it show in what you understand, solve, and achieve.
Free forever · No credit card · No time limit
The method
Forty-two commands, each one a method from learning science, all running on your own chapter, slide deck or lecture recording. Nothing to set up. Nothing to make.
Your study plan
Top students break the material down before they start. Drop in a chapter, a slide deck, a lecture — Ritsu cuts it into small units and puts them in the right order, with your progress on top. There's nothing left to plan. You just follow the path.
Deep understanding
Top students don't stop at what. Ritsu pushes the same way they do: asking /why until you reach the reason, challenging you to /explain it in your own words, tying it to something you already know. You stop borrowing the idea. You own it.
Learning commands
Top students don't have one study move — they have a dozen, and know which one to use when. Ritsu names all of them: /quiz, /mindmap, /timeline, /diagram, /code, /crossword. A chatbot gives you a box to type in. This gives you a vocabulary.
Problem sets
Top students attempt it cold, then check. /solve holds the solution back until you've written your attempt — then grades it, shows you where it broke, and makes you redo it. Reading a solution feels like learning. It isn't.
When you're wrong
Top students don't just check the answer — they find the misunderstanding underneath it. Ritsu reads what you actually wrote, names the idea you have backwards, and points at the page it came from. Every error leaves you with something.
Spaced repetition
Top students revisit an idea just before it fades — that's the whole trick. Ritsu tracks the moment for you and brings the concept back as a question. No cards to make. Week two is still there in week twelve.
Knowledge map
Top students know, concept by concept, what's solid. Every answer you give updates one map of your subject, each concept carrying a score you earned — not a self-rating. What you've proven lights up; the dim ones get drilled next.
All in one
The top-1% system takes four apps and an evening per chapter to feed: cards to make, summaries to write, practice to hunt down. One upload gives you all of it, from your own material. Nothing to buy on top. Nothing to make.
Free forever · No credit card · No time limit
The science inside
Ritsu turns learning science into what you actually do: recall, explain, question, practice, connect, and revisit.
Henry Roediger III & Jeffrey Karpicke (2006)
Instead of showing you the answer, Ritsu asks you to pull it from memory. You produce what you know — and rereading alone never counts as mastery.
What changes
You leave behind
You get
You don't sit down and build a plan from scratch. Your study time goes into learning, not choosing.
Ritsu breaks what you're studying into an ordered path, so the next step is always clear.
Rereading, highlighting, and waiting for something to feel familiar are no longer the whole session.
Recall it. Explain it. Question it. Solve with it. Revisit it. Ritsu keeps the whole process in one workflow.
Seeing an idea before isn't the same as being able to explain it or use it.
Explain it from memory, connect it, solve with it, and apply it before it counts as mastered.
Being shown the right answer doesn't tell you why your reasoning went wrong.
Ritsu identifies the misconception behind the mistake, then guides you through a retry.
“I think I know it” doesn't tell you what's solid or where your next hour should go.
Every concept carries an earned mastery score, so strengths and gaps are clear at a glance.
Learning it for the test only to lose it afterward isn't mastery.
Ritsu brings concepts back over time, so what you've learned stays within reach.
Files here, flashcards there, a chatbot somewhere else — your learning system shouldn't live across five tabs.
Upload once, then plan, learn, practice, track, and review in Ritsu.
The hours spent preparing to study, before any studying happened, are gone. That was never studying anyway.
Ritsu builds the setup from your material, so more of your time goes into learning — not preparing to learn.
FAQ
Short answers to real questions — and the free plan is there for whatever's still uncertain.
A file. That's the whole list. Nothing to install, nothing to configure — it runs in the browser. Drop in a chapter and you're working inside a minute.
The choice
Option one
You close this tab. The chapter is still there. You'll open it again on Sunday, read it twice, highlight a bit more, and hope it lands this time. Three weeks from now you're in the same seat, three chapters further behind, still not sure what you actually know. You already know how this one goes — it's why you read this far.
Option two
You start free — no card, nothing to set up. Tonight you drop in the chapter you've been avoiding. Thirty seconds later there's a plan. Twenty minutes later you know exactly which three concepts you don't have. By the weekend you have them — and you do it again with the next chapter, and the one after that.
Same twelve weeks either way. The only thing you're choosing is what you'll have at the end of them.
Free forever · No credit card · No time limit
Nine situations, six modes
Nine situations, and a way to shape the plan for each. Whatever's in front of you this week, there's already a path built for it.
Most students read it twice and keep a fifth. You'll close it understanding every concept deeply — and still understanding it months from now.
Most students skim the slides the night before. You'll master what's behind each one, not just what's printed on it.
Paste a YouTube link. Ritsu turns a two-hour lecture into concepts you can actually recall.
Most students stall at page three and quietly give up. You'll understand the argument well enough to explain it, question it, and build on it.
Most students read the solution and feel like they understand. You'll understand the method deeply enough to solve every problem like it, not just this one.
Most students check their score and move on. You'll turn every mistake into a concept you've locked down for good.
Most students forget it by tomorrow. You'll understand it properly the first time, and still have it when you need it.
Most students end up with four folders and no thread. You'll have every piece in one place, and learn each one properly instead of half-learning all of them.
Most students re-read everything and run out of time. You'll spend all three days on the things you'd actually get wrong — deeply enough that they stay.
