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Notes · Quizzes · Flashcards · Spaced review

Study your
class material.

Add your class notes, slides and readings, and QuizStack turns them into notes, quizzes and flashcards, then brings each card back right before you'd forget it.

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I'm a parent
Start free with email

Free to start · No card · For students 13+

The Today page, with example courses.
How it works

One reading, three ways to study

  • PDF and slides
  • Photo of notes
  • YouTube
  • Any link
  • Plain text

  1. Add a slide deck, PDF or photo.

  2. Get clean notes, key terms marked.

  3. Key facts become spaced flashcards.

  4. Quiz yourself, answers explained.

Try it

Try one — no account needed.

Flip it, rate it, and see when it would come back. It runs in your browser, and nothing is saved.

BIOLOGY · CELLS

Which organelle makes most of the cell's ATP?

ANSWER

Say it to yourself first, then show the answer and rate how well you knew it.

Your memory

Skills fade. We bring them back right before you'd forget.

Each card you get right comes back later than the last time: a day, a week, a month. Math skills work the same way, with fresh problems each time.

  1. TodayLearnedfirst time through
  2. 1 dayDue nowreview today
  3. 7 daysLearningstill settling in
  4. 30 daysStrongsafe for weeks
Example schedule. Yours depends on your answers.
Courses

Your classes, in colour

Sources, notes, decks and quizzes kept by class, with each course's cards due and flashcard mastery.

Example courses
  • AP Biology6 due
  • Chemistry8 due
  • US History3 due
  • Algebra 2caught up
Practice

Math and the SAT

Practice that grades the moment you answer, with a worked solution for every miss.

Math practice

49,000

Solver-verified problems across nine courses, grade 6 to college, with hints and worked solutions.

Browse every skill

Digital SAT prep

400–1600

A diagnostic, Math and Reading & Writing practice, and adaptive section tests, with an estimated score.

Snap a problem

Photograph one homework problem and see it worked out, step by step. When it matches a skill in the math bank, practice five more like it.

For parents

  • For students 13+QuizStack is made for students 13 and up.
  • Birth month and year onlySign-up never asks for a full date of birth.
  • Export or delete anytimeDownload the account's data or delete it from Settings.
  • No card neededFree to start, with no payment details asked.

Questions

Is it really free?
Yes. Math practice, flashcard review, streaks and mastery never cost anything. Making new notes, quizzes and decks uses a monthly allowance, the same for every account. There's nothing to buy.
What uses the monthly allowance?
Each request to make something: a set of notes, a quiz, a deck, a graded answer or a tutor reply. A long document uses more of it than a short one. It resets on the 1st, and Settings shows how much you've used.
What ages is it for?
Students 13 and up.
Can I close the tab while it works?
Yes. Generation runs in the background and lands in your activity feed. Start an import, close the laptop, come back to finished decks.
Does it handle math notation?
Yes. QuizStack reads your source with the math notation intact, and equations render properly in your notes, cards and quizzes.
Can I import Anki decks?
Yes, images included. Review history stays behind, so the cards start fresh on your schedule here.
What happens to my files?
Your uploads are kept with your account so you can study from them. Settings lets you download a copy of your data, and deleting your account erases your uploads along with everything else.
What else is in QuizStack?
  • Image occlusion: hide the labels on any diagram (anatomy, maps, circuits) and recall them from memory.
  • Study calendar: paste a course's syllabus and its exams, assignments and deadlines land on one upcoming list.
  • Live lecture capture: record a lecture as it happens and study it as notes and cards after class.
  • Explanations on the spot: select a passage in your notes, or tap Explain on a quiz question or a worked solution.

Free to start

Notes, quizzes, flashcards and spaced review for your classes. No card needed.

See pricingStart free
QuizStack — study your class material