Math you'll actually keep

How it works

1. Find your level

   A short adaptive placement quiz marks the topics you already know, so you start where you are.

2. Practice to mastery

   Each topic opens with worked examples, then practice. Three right in a row masters it and unlocks what comes next.

3. Review right on time

   FSRS spaced repetition brings a topic back just before you'd forget it. Practicing a topic also refreshes the ones it builds on.

4. Keep your streak

   Earn XP for focused minutes, meet your daily goal to grow a streak, and collect badges along the way.

What you'll learn

Every topic builds on the ones before it, so gaps get filled on the way.

• Algebra 1

  19 topics

  • Order of operations
  • Solving formulas for a variable
  • Exponent rules

• Advanced Algebra

  59 topics

  • Factoring out the greatest common factor
  • Solving rational equations
  • Identifying conics

• Precalculus

  17 topics

  • Angles and radians
  • Sum and difference formulas
  • Parametric equations

• Calculus 1

  33 topics

  • Limits from graphs and tables
  • Linear approximations and differentials
  • Integrals giving inverse trig functions

• Geometry

  12 topics

  • Angle pairs
  • Congruent triangles
  • Volume of solids

• Calculus 2

  23 topics

  • Integration by parts
  • p-series, integral and comparison tests
  • Calculus with polar curves

• Calculus 3

  31 topics

  • Vectors in three dimensions
  • Lagrange multipliers
  • The divergence theorem

Built for the way you do math

• Write your answer

  Type on a math keyboard or write by hand. Handwriting is read back to you to confirm before it's graded.

• Proofs graded against a rubric

  Each rubric item is marked met or not, with feedback. If you think the grader got it wrong, you can dispute it once.

• Exact answers

  No rounding. Answers are exact and in simplest form, and an equal but unsimplified answer gets a free retry.

• Fresh problems

  Every problem is generated from a seed, so you practice the skill, not a memorized answer.

Free, with no ads or trackers

Calculowl costs nothing. There are no ads, no analytics and no tracking scripts. The only possible cost is your own Anthropic usage, and only if you add a key.