Terms

What Leitner is

You describe something you want to learn. Leitner turns it into a plan of short lessons, writes them, and brings back what you get wrong. It is operated by Ernest Laptiev.

Your account

One account per person, and it is yours to look after — keep the password to yourself. You need to be 13 or older. If you are under 16, get a parent or guardian’s permission first: in several countries they have to agree on your behalf, and in most of them a contract like this one is not binding on you without them.

You can delete your account at any time from your settings. We can close an account that is being used to attack the service, to break the law, or to resell what it generates.

What you upload

You can upload material to build a plan from. By uploading it you are telling us you are allowed to — that you own it, or that your use of it is fair dealing, or that the licence permits it. Uploading a textbook you do not have the right to copy is your decision and your responsibility, not ours.

You keep every right you already had in it. We use it to build your plan and for nothing else: never for another learner, never pooled, never to train a model. See the privacy notice.

What Leitner generates

The plans, lessons, exercises and explanations Leitner writes for you are ours, and you may use them for your own study — read them, print them, keep them after you leave. You may not resell them or publish them as a course of your own.

The structure Leitner derives along the way — the names of concepts, which must be learned before which, how hard each is — is ours and may be reused to build other people’s plans more cheaply.

Generated material can be wrong

Lessons are written by a language model. It is good, and it is not infallible: it can state something confidently that is false, cite a passage that does not say what it claims, or get a calculation wrong. Leitner shows you where each claim came from precisely so you can check it.

Do not rely on it alone for anything that matters — an exam answer, a medical or legal or financial decision, anything with a consequence. Check it against your course material. If something looks wrong, it may be.

What we promise, and what we do not

We will do our best to keep the service running and your work safe. We cannot promise it will always be available, that generation will always succeed, or that a plan will get you the grade you want. To the extent the law allows, the service is provided as it is, and our liability is limited to the amount you have paid us in the last 6 months. Nothing here limits liability we cannot limit by law — including for death or personal injury caused by negligence, or for fraud.

Paying

The first lesson of every plan is free, and you can draft plans and read them without paying for anything. Beyond that you either buy minutes of lessons as you go or take a subscription. Prices are shown before you are charged, minutes you have bought do not expire, and nothing is charged without you confirming that amount first.

A subscription runs until you cancel it. Cancelling stops the next payment and leaves the one you have already made running to the end of the period it paid for — we do not take back time you have bought.

Lessons are generated, so they vary. Every course is written for the goal it was asked for rather than taken from a shelf, which means two people with the same goal do not get the same lessons, and yours may differ from any example we show. The free tier exists so you can see what it makes for your goal before paying anything.

None of that takes away the rights you have by law. If you are a consumer in the EU or the UK you have a statutory right to withdraw from a distance contract, and it applies here whatever else this page says.

Changes and law

• These terms carry a version. When they change in substance we ask you to accept the new version before you carry on.
• They are governed by the law of Ukraine, and its courts have jurisdiction. If you are a consumer, this does not take away rights you have where you live.