The best TI-84 calculator apps, compared.
Taculator 84, Graphing Calculator Pro⁸⁴, Calculate84, Calculate 84 AI, Wabbitemu and Desmos are the apps students actually consider. The right one depends on your device, your budget, and whether your class teaches on a TI-84 style handheld. Here's the full table — with the trade-offs we'd want to know ourselves, and full disclosure: two of these apps are ours.
| App | Platforms | 84-style keypad | Colors & themes | Price | Free for schools | Best for |
|---|---|---|---|---|---|---|
| Taculator 84 by us | iOS, iPadOS, Mac, Android | Yes — same layout, menus & syntax | 14 keyboard themes | Free incl. graphing; advanced Pro functions $29.99 one-time (or subscription). No ads | Yes — full app via Apple Custom Apps | TI-84 muscle memory on any device — incl. Android & Mac |
| Graphing Calculator Pro⁸⁴ also by us | iPhone, iPad, Mac | Yes | 1 | $12.99 one-time — everything included. No subscription, no ads, no in-app purchases | Volume purchase via Apple School Manager | The cheapest way to own every feature outright |
| Calculate84 | iOS / iPadOS only | Yes | 1 | Free with ads; ad-free as one-time purchase | Yes — institutional program | 84-style on Apple devices |
| Calculate 84 AI | iPhone, iPad, Mac | Yes, plus an AI assistant | 1 | Free; AI Pro $3.99/month or $24.99/year (subscription) | — | AI step-by-step explanations, if you're okay with a subscription |
| Wabbitemu | Windows, Mac, Android — no iOS | Yes (emulates the real TI OS) | 1 (the original look) | Free — requires a ROM image from a TI calculator you own | Free for everyone | Tinkerers who own a TI and want the exact OS |
| Desmos | Browser, iOS, Android | No — own modern interface | 1 | Free | Free for everyone | Modern exploratory graphing & digital-SAT practice (built into Bluebook) |
Data as of July 2026, from the vendors' own listings. "Colors & themes" counts the keyboard looks each vendor advertises in its own listing. Taculator 84 and Graphing Calculator Pro⁸⁴ are made by us (Di Venisco); Calculate84, Calculate 84 AI, Wabbitemu and Desmos are products of their respective owners. TI-84® is a trademark of Texas Instruments Incorporated; none of these apps is affiliated with TI. Phone and tablet apps are not permitted on the SAT or ACT — all of these are study tools; Desmos is additionally built into the digital SAT's testing app. Spotted something outdated? Tell us and we'll fix it.
The only 84 keypad that comes in your color.
Every other calculator in this comparison ships with exactly one look. Taculator 84 has 14 keyboard themes — tap one and watch the keypad change, exactly like in the app. As of July 2026, no other app in this table advertises keyboard themes.
Which one should you pick?
Your class teaches on TI-84 style handhelds
Taculator 84. The point of an 84-style app is that textbook instructions, teacher demos and your own muscle memory carry over 1:1 — y=, window, zoom, trace, graph. Taculator 84 is the only one that follows you across iPhone, iPad, Mac and Android, with no ads.
You want to pay once and own everything
Graphing Calculator Pro⁸⁴ — $12.99 one-time, every feature included, no subscription, no ads, no in-app purchases. It's made by our team, for people who simply want to buy a calculator once — like the handheld, minus $120.
You just want a great free graphing tool
You have two solid free options. Taculator 84's graphing is completely free — plotting, tracing, zooming cost nothing; only the advanced Pro functions are paid. So if you want free graphing with the familiar 84 keypad, start there. Desmos is also free and excellent — its edge is SAT practice, since it's the calculator built into the digital SAT's testing app; its trade-off is that it doesn't use the TI-84 workflow your class may run on.
You own a TI calculator and want the exact same OS on your PC
Wabbitemu. It emulates the real TI operating system, which nothing else here does. The trade-offs: you need to create a ROM image from your own calculator, there's no iOS version, and it feels like the emulator it is rather than a native app.
You're a school outfitting managed iPads
Taculator 84 EDU — completely free for schools and districts, full feature set with no ads in any tier, and the only option that also covers Android tablets and Macs in mixed-device districts. Request access with your Apple Organization ID and deploy via MDM. How Taculator 84 EDU works.
Free to try. Familiar in the first minute.
Same keypad, same menus, same syntax as the handheld from class — on iPhone, iPad, Mac and Android.