A CrayonCity product

Crayon Board, the tutor that draws it.

An AI tutor that teaches the way a person does: it talks, and while it talks it draws on a whiteboard. Type any topic and get a spoken, illustrated class in minutes.

Free to start, no card needed. Plans are $5, $9 or $19 a month and you can cancel whenever. See plans and pricing.

A Crayon Board class on merge sort: the whiteboard shows a hand-drawn diagram and a quick-check question, with the class plan and key points beside it
A real class, recorded: the grown-ups mode teaching merge sort.

Launch film

Meet Crayon Board, the launch video.

The Crayon Board launch video. Watch on YouTube.

What you get

What every class includes.

Speech and ink in step

Each sentence lands on the board as it is spoken. Diagrams are built part by part, with labels, arrows, graphs and formulas.

A plan made for you

The tutor asks about you or your goal, names the class, then teaches it in a few short sections pitched at your level.

Ask at any point

Put your hand up mid-sentence, by typing or speaking. The tutor answers on the board, then picks the class back up.

Quick checks

Short multiple-choice questions during the class, each with an explanation of why an answer is right or wrong.

Kids and grown-ups

A friendly mode for children, where classes are called adventures, and a precise mode for adults, with a choice of teaching styles.

Notes, sources and history

Key points are saved, the sources the class was checked against are listed, and past classes can be replayed from your history.

See it

Two ways to learn on the same board.

These are screenshots of recorded classes. You can play them yourself without an account.

Grown-ups mode: a merge sort diagram with a quick-check question
Grown-ups: precise, with key points and sources alongside.
Kids mode: a colourful drawing of two cars and a tree, with a quiz question
Kids: warmer words, bigger pictures and quiz time.

How it works

From topic to class in four steps.

  1. Sign in

    Sign in with your Google account at board.crayoncity.dev. Every new account starts with free credits, enough for a class.

  2. Pick a topic

    Type what you want to learn, briefly or in detail, and choose a teaching style, a voice and how long the class should be.

  3. Learn on the board

    The class starts in your browser. Starting it uses credits from your plan; if it fails to start, they are given back.

  4. Choose a plan for more

    Paid plans add more credits each month. Your plan switches on straight after payment.

Before you buy

Plans, payment and refunds.

Free

$0

A small monthly allowance, enough to see whether it teaches the way you learn. No card needed.

Crayon

$9 a month

For a class most days of the week. Renews monthly until you cancel.

Studio

$19 a month

For a household, a classroom or a very curious week. Renews monthly until you cancel.

The small print

Cancel any time. Refunds within 14 days of a payment, under our Refund Policy. Paid by card through Stripe.

Prices are in US dollars; tax is added at checkout where it applies. What each plan includes, and what a class costs in credits, is shown on the Crayon Board pricing page, which is where you subscribe. Crayon Board is software delivered online. Nothing is downloaded or shipped, and no human tutoring is included.