For students who learn alone, toward an exam.
Lectures from your book with page citations, practice in your course’s style, and a plan to your exam date.
It’s ten at night and you’ve worked all day. Chapter 4 is open on the desk — vector fields, or the Reformation, depending on which course tonight belongs to. The book is dense, the worked example skips exactly the step you need, and there’s no lecturer to stop and ask.
A private tutor would help — but a tutor bills by the hour, and a course runs all semester. So you reread the paragraph, then reread it again, and walk into the exam with gaps no one saw.
Add your course book as a PDF. Otto reads it and lays its chapters out as your curriculum.
Chapter by chapter, from the book itself, citing the page — and stopping to check you’re still with it.
Problems in your course’s style, held to how your course grades — once you upload its assignments.
Enter your exam date and Otto paces the chapters to it, so you arrive ready on the day.
Most study tools are glad to hand you the worked solution. You read it, nod, close the tab — and in the exam the same problem stops you cold.
Otto doesn’t do that. It asks the next question you should be asking yourself, and works the problem with you — up to the step you were stuck on, not past it.
Your assignments stay your own work. What you carry into the exam is what you understood.
Every lecture is taught from your course’s book and cites the page it draws on — so you can open the book and check.
Equations, diagrams and scanned pages alike — a proof in calculus, a problem in mechanics, a chapter of history, a section of a statute.
See which skills are solid and which need another pass before the exam — skills drawn from your book’s chapters, not a generic list.
It updates as you study, and your plan to the exam leans on it.
Problems shaped like the ones your course sets, from the chapter you just studied — and once you upload its assignments, held to how your course grades.
Miss a step, and the next session comes back to it.
ChatGPT and NotebookLM are excellent at answering — ask almost anything and you get a good answer. Otto is built for something narrower: it knows your course, your book and your exam, and it teaches rather than answers.
It has read your course book.
A general assistant works from whatever you paste into today’s conversation. Otto starts from your course’s own book — its chapters, its notation, its examples — and cites the page in every session, with nothing to paste in.
It holds you to your course’s standard.
Practice in the style your course sets, held to how your course grades once you upload its assignments. And when you’re stuck, it walks you to the missing step instead of handing over the answer.
It works toward your exam date.
Otto knows when your exam is and paces the chapters to it. The goal isn’t one good answer tonight — it’s being ready on the day.
Every chapter comes with everything — lectures, practice, the skill map and the plan to your exam. Start with any chapter you choose, free; after that, one payment covers the semester.
Free
No card needed
One chapter of your course, your choice — the first one you open — with every feature.
₪199
One payment — it never renews
150 days — a full semester through its exams
All your courses, every feature.
₪499
One payment — it never renews
365 days — three semesters, including summer
All your courses, every feature.
Each pass includes a generous fair-use allowance; past it, lectures continue with lighter reasoning until your allowance refreshes — nothing stops.
Passes are one-time payments: nothing renews, and there’s nothing to cancel. Buy again while a pass runs and the new days start when it ends. Payments are handled by Lemon Squeezy, our merchant of record, which takes care of billing, receipts and tax.
Upload your course book and study a chapter of your choice free — lectures, practice, and a plan to the date.
Start your free chapter
