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Study math flash cards on your phone, made from your own notes

Upload a PDF, slides, notes or a photo of your textbook page and get flashcards you can review in short sessions between classes.

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Drop files here or browsePDF, DOCX, PPTX, text or photos of your notes · several files with Plus

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Why short phone sessions help with math

Math rewards repetition more than cramming, and the gaps between classes are a good time to review. Math flash cards on your phone let you rehearse formulas, definitions and step patterns in five-minute blocks instead of waiting for a long evening.

Turn a chapter PDF or a photo of class notes into cards in one upload
Keep each card to a single formula, rule or definition
Review in short daily sessions rather than one long session before a test
Check your cards against your teacher's examples before relying on them

Example algebra and geometry flash cards

What is the quadratic formula?x = (−b ± √(b² − 4ac)) / 2a, which solves ax² + bx + c = 0 for any real coefficients where the discriminant is not negative.

What is the derivative of sin(x)?cos(x), because the rate of change of sine at each angle equals the cosine at that angle.

What does the Pythagorean theorem state?In a right triangle, a² + b² = c², where c is the hypotenuse, the side opposite the right angle.

What is the area of a circle?πr², where r is the radius, since the area scales with the square of the radius.

What does y = mx + b represent?A straight line with slope m and y-intercept b, where b is the value of y when x is zero.

Generate the full set

Built from your material

Upload PDFs, DOCX, PPTX, plain notes or photos of pages. The text is read and turned into cards for your formulas and definitions.

Spaced repetition

Cards you miss come back sooner and cards you know fade into longer gaps, so you spend your phone time on the math you still need.

Study in the browser

Review on your phone's browser with no download required. The free plan includes 3 generations per month, and Plus adds unlimited generations.

How it works

Upload your math material

Add a PDF of your textbook chapter, a slide deck, typed notes or a photo of a worked problem set.

Check the generated cards

Skim the front and back of each card, then edit any formula or definition that does not match your course.

Review a few minutes a day

Open the cards on your phone during breaks. Spaced repetition decides which cards come up next.

Good math cards usually test one idea each. Put the formula name on the front and the rule with its conditions on the back, or show a short problem and its first step. Splitting a card that tests two ideas at once makes the review more accurate.

If you want to move cards into another app later, Plus includes PDF, DOCX, Anki and CSV export. The free plan keeps everything in the browser so you can start with no credit card.

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Frequently asked questions

How many math flashcards should I make for a test?

Most students find 20 to 40 cards per unit manageable, focused on the formulas and definitions your teacher stressed. Keep adding cards as new topics come up rather than making one huge deck.

How often should I review math flashcards?

Short daily sessions work better than one long cram session for math, because spaced repetition schedules cards you miss more often. Five to fifteen minutes a day is enough for most courses.

Can I study these on my phone for free?

Yes. The free plan includes 3 generations per month and lets you study in the browser on your phone. Exports are not included on the free plan.

Can I export my math cards to Anki?

Yes, Anki export is part of the Plus plan, which costs $39 per year or $7.99 per month. Plus also includes PDF, DOCX and CSV export and unlimited generations.

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Review the main ideas visually or practice recalling them.