Verdict
The best-liked calculator on the App Store and it earns it. A TI-83 layout you already know, running far faster than the plastic one ever did.
Best for
A student or engineer who thinks in TI keystrokes and wants them without the hardware.
Dealbreaker
It is a graphing calculator and nothing else — no tape, no unit conversion, none of the everyday conveniences — and no exam hall will let you bring a phone, which is where most people actually need a TI-83.
The facts.
Pulled from the App Store, not written by hand.
Price
$12.99 once
In-app purchases
Unknown
Ads
Unknown
Platforms
iPhone, iPad
Rating
4.9★ (4,037)
Version
3.4
Last updated
Nov 22, 2025
Released
May 18, 2014
Attributes
Native appOne-time purchaseNo subscription
Category
Education, Utilities
What reviews consistently say.
Themes grouped from 200 App Store reviews. Source feed ›
Praised for
Ease of use and design14 reviews
Value for money7 reviews
Battery and performance4 reviews
Where this comes from
14 of 200 recent reviews raised: Ease of use and design (positive)App Store reviews ›
7 of 200 recent reviews raised: Value for money (positive)App Store reviews ›
4 of 200 recent reviews raised: Battery and performance (positive)App Store reviews ›
Reproduces a TI-83 style keyboard and graphing behaviour rather than a general calculatorApp Store listing ›
Where we recommend it
Calculator apps you buy once ›Scientific and graphing calculators, bought once.
Alternatives with the same rule.
Every app here is a single purchase. None of them can start charging you monthly for what you already bought. Also with a catch.
$1.99 once · 4.8★ (2,627) · Updated Nov 28, 2017
Verdict. Throws out the keypad entirely. Numbers sit on an endless canvas, stay connected to each other, and update everything downstream when you change one.
Best for. Anyone doing the kind of arithmetic where you keep changing an input and want to watch the answer move.
Dealbreaker. You have to unlearn a calculator to use it, and a crash reviewers have been reporting since iOS 11 still turns up in recent reviews.
$5.99 once · 4.6★ (12,029) · Updated Feb 26, 2026
Verdict. The one most people end up owning. Broad, capable, and priced low enough that it is the default recommendation in a lot of classrooms.
Best for. Someone who needs a graphing calculator today and does not want to research it.
Dealbreaker. It looks its age and people say so — the interface draws as many complaints as compliments, and several reviewers say it took real effort before it clicked.
$5.99 once · 4.7★ (6,344) · Updated Mar 12, 2026
Verdict. The scientific counterpart to the one above, from the same developer, and the better buy if you want a calculator rather than a plotter.
Best for. Someone who wants a fuller scientific keypad than the built-in app offers.
Dealbreaker. The Mac version does not take keyboard input, which makes it close to unusable there, and reviewers report updates breaking things that previously worked.