Chalk
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iPhone, iPad & web

An AI tutor that draws back.

Chalk is a shared whiteboard with a tutor on the other side. Write the problem with your pencil, ask out loud, and watch the math get worked out next to your work — not in a chat bubble.

7-day free trial · Lite $7.99/mo, or $4.99/mo billed yearly · Cancel anytime
"find the roots and the vertex"
1 3 x=1 x=3 vertex (2, −1)
Listening Factor for zeros Plotting Vertex (2, −1)
1 / 1
100%
One canvas, both of you. Voice on. Drawn in real time.
How it works

The way a tutor would, if one were sitting next to you.

01
∫ x² dx = ?

Write the problem.

Sketch it out the way you'd sketch it in your notebook — with Apple Pencil, a mouse, or your finger.

02
"why is this wrong?"
x² + 5x = 6 ↘ = 6 / x ✗

Ask out loud.

"I'm stuck." "Why is this wrong?" "Try another way." The tutor hears the question and reads what you've already written.

03
d/dx (x³) = 3x²

Watch it work.

The next step appears beside your work, in handwriting. Graphs plot themselves. The voice explains what the pen is doing.

Why Chalk

Most AI gives you walls of text. Math doesn't live there.

A real tutor draws the next step beside your work and explains it while writing. We built the smallest version of that — and skipped everything else.

A chatbot
A photo solver
Chalk
Pencil input
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—
Draws with you
—
—
Reads your work
—
Once, from a photo
Real-time voice
Voice exists, separate from math
—
Step-by-step solving
Sometimes
Course-paced lessons
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—
Courses

From pre-algebra to calc 3 — and the math after.

Twelve courses. Every problem has a worked solution, written out the way it would be on a board.

Foundations
Pre-Algebra
288 problems
Foundations
Algebra 1
311 problems
Foundations
Algebra 2
300 problems
Foundations
Geometry
276 problems
Pre‑College
Trigonometry
239 problems
Pre‑College
Pre-Calculus
251 problems
Calculus
Calculus 1
290 problems
Calculus
Calculus 2
279 problems
Calculus
Calculus 3
324 problems
College
Statistics
312 problems
College
Linear Algebra
312 problems
College
Discrete Math
288 problems
FAQ

Questions, answered.

Who is Chalk for?
Students taking a math class — middle school through college — and self-learners working through a textbook. If you tend to reach for a pencil before you reach for a keyboard, you're who we built it for.
Do I need an iPad?
No. Chalk is an iPhone and iPad app, and it works on the web with a mouse, trackpad, or touch. iPad adds Apple Pencil.
How much does it cost?
Lite monthly starts with a 7-day free trial; cancel before it ends and you pay nothing. Lite is $7.99 a month (150 tutor messages), and Unlimited is $19.99 a month with no limit on tutoring. Pay for the year and it's $59.99 or $119.99, as little as $4.99 a month.
Will it just give me the answer?
Not unless you ask for it. By default the tutor walks you to the answer one step at a time, and asks what you've already tried.
What math does it cover?
Pre-algebra through calculus 3, plus linear algebra, statistics, and discrete math. Twelve courses in all.
How is this different from a chatbot?
A chatbot is a text box. Chalk is a whiteboard. The tutor sees what you've drawn, draws the next step on the same page, and speaks while it draws.
Free trial

Pick up the pencil.

Seven days free on Lite, then $7.99/month, or $59.99/year. Cancel anytime. Create your account in under a minute.

On your phone or iPad? Get the app