84GPT

Get 84GPT

The dongle plugs into your TI-84 Plus CE and puts it on WiFi. The app, the store and a free account come with it.

Choose an edition
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Payment is handled by Stripe; we never see your card. Works with the TI-84 Plus CE and TI-84 Plus CE Python. The calculator isn't included. All sales are final; faulty units are replaced under a 90-day warranty. Shipping and returns.

Drawing of the 84GPT board, 21 by 17.8 millimetres, with a short cable ending in the Mini-USB plug that goes into the calculator 21 mm 17.8 mm WiFi chip Into the calculator
The board inside, drawn to scale. It's smaller than a postage stamp and takes its power from the calculator.

In the box

  • The dongle

    WiFi board with a short cable and the Mini-USB plug for the calculator.

  • A quick-start card

    Three steps: plug in, join WiFi from your phone, open 84GPT.

  • The 84GPT app

    Installed from the setup page. It updates itself over WiFi after that.

  • A free account

    Sign in with Google, Apple or Microsoft to link your dongle and get bigger monthly limits.

Free to use, Plus if you want more

No subscription is needed. Limits reset on the 1st of every month.

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Before you buy

Which calculators does it work with?

The TI-84 Plus CE and the TI-84 Plus CE Python. It doesn't work with the older TI-84 Plus, the TI-84 Plus Silver Edition or the TI-83.

Do I need a computer?

Only a phone or anything with WiFi and a browser, for the one-time WiFi setup. The first install of the app is walked through on the setup page.

Can I use it in exams?

84GPT can't run while the calculator is in Press-to-Test mode, and you should unplug the dongle for any test. Check your school's rules.

What if it's faulty?

If it arrives damaged or stops working because of a fault within 90 days of delivery, we'll replace it. You pay to send the faulty one back. We don't take back working units because you changed your mind, so check it's for a TI-84 Plus CE or TI-84 Plus CE Python before ordering. Details are on Shipping and returns.