Can people tell it isn't a normal calculator?

No. DojoCalc is a real TI-84 Plus CE and looks and works exactly like a stock one. The ChatGPT features only appear when you open them.

Is it really ChatGPT?

Yes. Your questions go to the same models you would use in a browser, brokered through our servers so nothing sensitive lives on the device.

How do I ask a question?

Type it on the keypad, or switch to camera mode and aim the calculator at a problem on paper.

Does it still work as a calculator?

Completely. Every TI-84 Plus CE function (graphing, solving, programs) works exactly as before.

When can I get one, and how much is it?

We are building the first batch now. Join the waitlist for pricing and a ship date. It is a one-time purchase, with no subscription.

A calculator that actually thinks.

Name: DojoCalc
Brand: DojoCalc
Availability: PreOrder

DojoCalc is a genuine TI‑84 Plus CE with a custom ESP32 board, Wi-Fi, and a camera inside. Ask it anything or scan a problem off paper, and it still graphs and solves like a normal calculator.

Join the waitlist See it in action

TI-84 Plus CE

NORMAL FLOAT AUTO REAL RADIAN MP

PRESS ENTER TO EDIT

DojoCalc

Online

◆ DojoCalc

Use the calculator screen to type or scan.

Inside the shell

Real hardware. Not a hack.

A custom board drops inside a genuine TI-84 Plus CE: an ESP32 brain, a camera, and its own battery, all behind a case nobody looks twice at.

TBD

Real hardware photo mockup goes here.

Custom-designed PCB: Shaped to fit inside your calculator without changing the outside silhouette.
Hidden rear camera: Tucked into the battery screw-hole area so the scan window stays basically invisible.

Features

Watch it actually work.

Ask a word problem, scan one off the page, or read the answer as real typeset notation, on the exact screen that ships inside the calculator.

Ask anything: Type a question on the keypad and the answer streams back.
Aim and scan: Point the camera at a problem on paper and it reads it. No typing.
Real typeset notation: Fractions, roots, integrals, and chem render like a textbook, not plain text.

Real ChatGPT: The same models you'd use in a browser, brokered through our servers.
Saved history: Every question and answer is stored on the calculator to revisit.
No subscription: Buy it once. Credits are included, then bring your own key for free.

Hidden in plain sight

Still a graphing calculator. Now it thinks.

Graph, solve, and run every TI-84 Plus CE function exactly like before. ChatGPT only shows up when you ask for it.

Join the waitlist

y = x²

FAQ

Questions, answered.

Can people tell it isn't a normal calculator?: No. DojoCalc is a real TI-84 Plus CE and looks and works exactly like a stock one. The ChatGPT features only appear when you open them.
Is it really ChatGPT?: Yes. Your questions go to the same models you would use in a browser, brokered through our servers so nothing sensitive lives on the device.
How do I ask a question?: Type it on the keypad, or switch to camera mode and aim the calculator at a problem on paper.
Does it still work as a calculator?: Completely. Every TI-84 Plus CE function (graphing, solving, programs) works exactly as before.
When can I get one, and how much is it?: We are building the first batch now. Join the waitlist for pricing and a ship date. It is a one-time purchase, with no subscription.

Waitlist · now on Discord

Be first to get one.

The waitlist lives in our Discord now. Join and your spot in line is locked in the moment you arrive — the earlier you join, the higher your founder rank.

Join the Discord

Free to join. One-time hardware purchase. No subscription. No spam.