84GPT84GPT
- The WiFi dongle and its calculator plug
- Every app, plus the Store
- Free account: 200 AI questions a month
Launching soon for the TI-84 Plus CE
Your calculator, online.
YouTube, games and AI homework help on your calculator's own screen. A tiny dongle plugs into the side.
The first 10 sign-ups get 15% off.
US orders only. One email when it's ready to order, never shared.
What it does
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Plug it in. It's online.
The dongle goes into the calculator's side and a home screen of apps opens: YouTube, Shorts, AI Chat, Math, Search, Messages and a Store for games.
y=These are real screens. The keys under the screen jump between them.
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YouTube, on a calculator.
Search for anything and pick from real thumbnails. Each video has its own page with the channel, views and likes. Videos play full screen, and Shorts scroll with the arrow keys. There's no sound: the calculator has no speaker.
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Ask it anything.
Ask a question and get a short, clear answer sized for the screen. It remembers the conversation when you ask a follow-up.
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Stuck on a problem? See the steps.
Type it with the calculator's own keys. The Math app shows the working in numbered steps, so you can follow how it gets to the answer.
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Games, installed over WiFi.
Open the Store, press Get, and play. No computer and no cable, and updates take one press.
See what's in the Store -
Message your friends.
Rooms open with a code you share with friends. Anyone with the code can join, and every room expires after a week.
Barely there.
It sticks out 10 mm from the calculator's side. The shell is sealed, and power comes from the calculator, so there's nothing to charge.
- Size
- 27 × 21 × 10 mm
- Shell
- Sealed and textured, with a smooth face for the 84
- Plug
- Mini-USB, into the calculator's side port
- Inside
- ESP32-S3 with 2.4 GHz WiFi
- Updates
- The dongle updates itself over WiFi
Online in three steps.
Plug in the dongle
It fits the calculator's USB port and draws its power from the calculator.
Join WiFi from your phone
Join the WiFi network called "84GPT-Setup", pick your own WiFi and type its password. You only do this once.
Open 84GPT
Everything lives in one app with its own home screen, made for the calculator's keys.
Off during tests.
Press-to-Test means no 84GPT.
When a teacher puts the calculator in Press-to-Test mode, the calculator won't run 84GPT at all, so the dongle can't be used. The blinking test light works exactly as it does on any TI-84 Plus CE.
Unplug the dongle before any test anyway. Some tests don't allow anything attached to a calculator.
One dongle. No subscription needed.
Everything works with the free account. Plus is there if you use it a lot.
84GPT Camera
- Everything in 84GPT
- A camera for Snap: point it at a problem, get the steps
Plus
Optional, cancel any time
- 2,000 AI questions a month
- 200 videos and 10,000 chat messages a month
Questions.
Something else? Ask us.
Which calculators does it work with?
The TI-84 Plus CE, including the Python edition. It doesn't work with the older TI-84 Plus, the Silver Edition or the TI-83.
When can I order?
There's no date yet. Everyone on the waitlist gets one email the day orders open, and the first 10 people who joined get a code for 15% off.
Do you ship outside the US?
Not yet. The first batch ships to the US only, and shipping is free.
Does it need a computer or a phone?
A phone, or anything with WiFi and a browser, for the one-time WiFi setup. After that the calculator connects by itself, and the dongle updates over WiFi.
Do I need a subscription?
No. A free account gives you 200 AI questions, 20 videos and 1,000 chat messages every month. Plus raises that to 2,000 AI questions if you use it a lot.
Does it use the calculator's battery?
Yes. It runs off the calculator, so you'll charge the calculator more often when you use it. We haven't published measured figures yet.
Can videos play sound?
No. The TI-84 Plus CE has no speaker, so videos play silently, full screen.
Is it allowed at school?
That's up to your school, so check its rules before bringing it to class. 84GPT can't run in Press-to-Test mode, and the dongle should come out before any test.
Who can read my messages?
Anyone who knows your room's code, so pick one that's hard to guess. Rooms expire after a week, have a swear filter and a rate limit, and can be reported.
Be first to get one.
The first 10 sign-ups get 15% off.
Join the waitlist and we'll email you once, the day 84GPT is ready to order.
US orders only for now. One email when it's ready to order, never shared.
