He teaches the whole course — not just tonight's homework. He builds the plan around your student, encourages them through every step, and keeps track of it all so you can see how it is going.
A real lesson, not a video: pick a level and he teaches it. No card, no account.
Voice audio never stored · Parent-controlled accounts · We never sell your student's data
Photo-solvers and chatbots give the answer and move on. Mr. Cadabra's Classroom is a high-level AI trained to do what the best tutors do — ask the next question, wait, and show the work.
The board draws each step in sync with the conversation and never jumps ahead to the answer your student is still working out.
Mr. Cadabra guides with questions and hints, praises real effort, and catches the common misconceptions for each topic.
A one-time check places your student at the right spot — a 9th grader can brush up on fractions without ever seeing "3rd grade."
See real progress by unit — what's mastered, what needs work — measured by actual scored checks, not vanity numbers.
Apps drill problems. A personal tutor builds a plan, adjusts it every session, and keeps the parent in the loop. That's what the AI behind Mr. Cadabra does — for every student, in every course.
Placement finds their true level; the tutor builds a foundation-first path from it and re-plans after every scored check. The dashboard always shows the plan — what to strengthen next, and why.
Encouragement in the moment, hints before answers, misconceptions caught as they happen — plus badges and trophies for real effort. Students can even ask "How am I doing?" and get a warm, honest answer.
On your dashboard, "How is my student doing, really?" answers in plain English — real progress and honest engagement, not vanity numbers. A weekly progress email with the same analytical summary lands every Friday.
Our family community forum drives the roadmap — what's working, what to improve, and which courses we build next. Founding families get heard first.
Every course is a full placement-to-mastery path — not a pile of random worksheets.
More subjects and grade levels on the roadmap — our goal is a complete K‑12 companion.
A short, friendly check finds exactly where your student is — no guessing, no starting from scratch.
Mr. Cadabra explains each step out loud in a warm voice and draws it on the board. Your student answers by talking with him — a real conversation. (The youngest students get big answer buttons too, and anyone can type instead.)
Guided practice problems with hints — plus short, no-hint "checks" that measure real understanding.
Units turn gold on the dashboard as they're mastered, so you always know what's next.
One simple product: the warm talking tutor your student talks back to, and all ten courses — Entry-Level Math (grade 1) through Differential Equations. Try it free, then subscribe when you're ready. Cancel anytime.
Try it — no card needed
The whole thing — every course, the warm voice
One plan covers up to two students — the second student is free. Each student gets their own login code, tutor, and dashboard. Open your Family page →
Teacher dashboard with a class roster and mastery heatmap. Custom pricing for schools, microschools, and co-ops. For teachers →
We're partnering with a limited number of classrooms this term for feedback. If that's you, let's talk.
Prices shown are introductory and may change. Taxes may apply.
You hold the account, your student just holds a login code — and when they talk with Mr. Cadabra, their voice is transcribed and the audio deleted on the spot. Nothing is stored, nothing is kept. Simple and easy to trust.
Not to advertisers, not to anyone. No targeted ads. No profiles for marketing.
Parent-created accounts and consent, a clear privacy policy, and delete-my-data on request.
They talk, he answers. Speech becomes text and the audio is deleted immediately — no recordings, ever. Prefer quiet? Typing always works.
See our Parents & Privacy page for the full details.
Mr. Cadabra's Classroom is new, and we'd rather tell you that plainly than paste fake five-star quotes here. Founding families get early access, introductory pricing locked in, and a direct line to the person building it — and their feedback shapes what gets built next.
Join during early access and keep your introductory rate as long as you stay subscribed.
Questions and ideas go to support@mrcadabra.com and get read by the builder — not a ticket queue.
Founding families vote first on what's next — new subjects, new tools, new grade levels.
Want in? Email us or just try a lesson below.
No. Mr. Cadabra's Classroom is built to teach, not to hand over answers. It runs on Anthropic's Claude — a high-end reasoning model (currently Claude Sonnet 5) — but the difference is everything built around it: a foundation-first approach that teaches each idea and its vocabulary before asking about it, a whiteboard that draws each step and never runs ahead of your student, and complete placement-to-mastery courses. The goal is understanding, not a copied answer.
Every problem and answer Mr. Cadabra states is double-checked by a separate math engine — real symbolic math software, not another AI — before your student ever sees it. If a check fails, the reply is silently corrected first. Progress numbers work the same way: dashboards only ever show real, scored work.
A microphone makes it best — your student simply talks with Mr. Cadabra, back and forth, like a real tutoring session. Their speech is turned into text and the audio is deleted immediately — we never store or keep recordings of your student's voice. No mic, or need it quiet? They can type instead any time, and the youngest students (grades 1–6) also get big answer buttons to tap.
Ten complete courses, from a first-grader's first numbers to college math: Entry-Level Math (grades 1–3), Basic Math (grades 4–6), Pre-Algebra, Algebra I, Geometry, Algebra II, Trig / Pre-Calculus, Probability & Statistics, Calculus, and Differential Equations. A placement check puts each student exactly where they belong, and they can move between courses anytime.
No. Mr. Cadabra is a math tutor and only a math tutor — ask him about video games, other homework, or anything off-topic and he'll kindly steer straight back to the math. Those guardrails are permanent and can't be talked around, which is exactly how a tutor for students should behave.
Parents create and control the account, and we ask for as little as possible — a first name or even just a nickname is all a student needs. We never sell student data or use it for advertising; when your student talks with the tutor their voice is transcribed to text and the audio is deleted immediately — recordings are never stored — and you can request deletion of your data at any time. See the Parents & Privacy page for specifics.
There's a free plan (no card needed): the placement check, a full first unit with Mr. Cadabra, and unlimited practice and topic help. Full access — every course, placement to mastery — is $29/month, and one plan covers up to two students ($24/month billed annually). Cancel anytime. See the Pricing page for details.
Any modern browser — Windows, Mac, Chromebook, iPad, or Android tablet. Nothing to install, and a student's login is just their code. Turn the sound on: his voice is half the charm.
Yes. One family plan covers up to two students — the second student is free — and each student gets their own login code, tutor, and dashboard. For classrooms, microschools, and co-ops, the teacher dashboard adds a roster and a class mastery heatmap; free pilots are running this term.
Try a lesson free today — no card required. Then start your student's course whenever you're ready.
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