Your exam, turned into a course.
Upload your syllabus or notes. Work through interactive lessons, and whatever you miss comes back until it sticks.
Don’t take our word for it. Pick a subject and have a go.
These are the same lesson blocks your own course is built from. Push things around and see if you learn something.
Friction on a slope: change the angle or µ mid-slide and the block keeps the speed it already had.
Gravity down the slope beats friction, so the block accelerates at a constant 1.40 m/s². That's why speed climbs in a straight line while distance curves upward. Distance is the area under the speed graph. Mass never appears in either sum.
Start with nothing in the box.
Blue is blood that has given up its oxygen, red is blood that has just collected some. Click any stage to read what happens there.
The vertex sits at x = −b/2a, which is why it slides sideways when you move b alone. The sign of a decides which way the curve opens, and its size decides how tight it is.
From year 22 the interest is doing more of the work than you are: everything above the green line is money the account made on its own. Over 25 years you pay in $60k and it earns $79k.
Adoption spreads through five groups, and each needs a different kind of evidence before it moves. That is why one message never reaches all of them. Pick a segment to read what it takes.
How it works
Tell it your exam and the date
A mechanics paper in three weeks, a finals week with four modules, a certification next month. Say what it is and when, then answer a few questions until the plan fits the time you have. A language you keep dropping or a reading list works the same way.
Upload the syllabus
Your syllabus, lecture notes, past papers, a textbook chapter. It reads them and builds the course around what will actually be examined rather than a generic curriculum. Your files stay yours and are never pooled with anyone else’s.
Learn in blocks like the ones above
Each lesson is something you do rather than read. Whatever you get wrong comes back a few days later, and again after that, until it stops coming back.
What people are learning
Each subject has its own page, with a live lesson block and a list of what a plan covers.
Questions
The blocks above are the answer to that. A lesson is something you interact with: a simulation to push, a trace to step through, a diagram to take apart. The model builds those and marks what you do with them, rather than talking at you. There is a chat inside every lesson, but it is for asking about the thing in front of you.
It is read to build your plan and then it stays yours. Your files are never added to a shared library, never used to build anybody else’s course, and never used as training data. You can export everything the account holds, or delete the account and take it all with it.
Whatever you get wrong comes back a few days later, then again after a longer gap, and the gaps keep stretching as long as you keep getting it right. That is the Leitner system. What comes back is the specific idea you missed, not the whole lesson.
Yes, and the first lesson of every plan is free before you decide anything. Single lessons are priced by length, minutes you buy never expire, and buying the rest of a plan at once costs less per minute than buying them one at a time.
Still have questions? Write to us (you do not need an account).
Pricing
10 hours of lessons a week across up to 10 plans, every lesson type, and full review scheduling. The right size if you are learning one thing properly.
Minimal is cheaper once you take more than ~11 lessons a month.
Go minimalThe first lesson of every plan is free. Draft up to 3 plans and see how a topic is taught before you pay for anything.
Build my exam plan, first lesson freeNo subscription. Buy one lesson at a time, or the rest of a plan at once for less per minute. Reviews keep running on everything you own.
Priced by length: $0.50 plus $0.06 a minute.
See a plan first30 hours of lessons a week across up to 20 plans, and the most room to ask questions inside a lesson. For several subjects at once, or one taken seriously.
Go maxMinutes you buy do not expire and work on any plan. A subscription is what to take when buying lessons one at a time stops being the cheaper way round.