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RETAINIUM

Stop re-reading your notes and hoping for the best

Cramming the night before doesn’t stick and you know it. Retainium helps you prepare your study materials faster and start quizzing yourself sooner, so you walk into the exam ready, not guessing.

Prep · beta

Prep

Generate an interactive quiz and a matching cheat sheet for any topic — then customize both by hand until they match how you study.

  • First generation is free. Sign in, describe your topic, and get a formula-first sheet plus quiz side by side.
  • Pay only for more generations. Editing and customizing your pack stays free — you buy credits when you want another AI pass.
  • We’re looking for early users. Prep is in beta. Try it, tell us what breaks, and help shape what students get next.
Try Prep free

No card required for your first gen

Quiz yourself the way the exam will actually look

No more squinting at “x^2 + 3x - 5” and trying to imagine what it means. Every question and answer choice renders with real math notation, so you practice reading the same formulas you’ll see on test day. Open the demo below and try it yourself.

You teach the course. We handle the busywork.

Building quizzes, formatting equations, and laying out study materials shouldn’t eat your entire weekend. Retainium gives professors and publishers an AI-assisted workspace that turns your outlines into structured lessons, quizzes, and formula pages in a fraction of the time, while keeping you in control of every word and every symbol. Your students get the same AI tutor that guides without giving away answers.

Learn more & request a trial

Stop wrestling with equation formatting

Anyone who’s hand-typed a piecewise function in a quiz builder knows the pain. Retainium has a built-in formula library. Search for the identity you need, drop it on the page, and drag it where it belongs. The equations render beautifully every time, no raw markup required.

Calculus & Algebra Reference

Search the formula library, drop what you need onto the page, and arrange it with drag-and-drop. No hand-typing required.

Quadratic Formula

Solutions to ax² + bx + c = 0

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Pythagorean Theorem

For right triangles

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Euler's Identity

The most beautiful equation

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Derivative Power Rule

Basic differentiation rule

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Integration by Parts

Integration technique

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Binomial Theorem

Expansion formula

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Every formula you add is searchable, reusable, and renders perfectly on any device. Need something custom? Create your own and save it to the library.

Ready to study smarter?

Try Prep for a free quiz + cheat sheet, or sign in if you already have access.

RETAINIUM