# Ncalc - Graphing Calculator 84 — Intended for use with Ti-84 83

> Ti-84 graphing and scientific calculator with advanced math and statistics. (iPhone/iPad app by Tran Duy.)

- Source: https://appshunter.io/ios/app/ncalc-graphing-calculator-84/id1509489130 (this page in markdown: same URL + `.md`)
- Developer: [Tran Duy](https://appshunter.io/developer/1449106994)
- Category: Education, Utilities
- Price: Free with in-app purchases (on sale, was $4.99)
- Rating: 4.60/5 from 4,947 App Store ratings · 194 written reviews indexed
- Age rating: 12+
- Requires: iOS 15 · 168 MB
- Languages: American English, Albanian, Arabic, Armenian, Azerbaijani, Basque, Belarusian, Bangla, Bosnian, Bulgarian and 41 more
- Released: 2020-04-28
- Data updated: 2026-08-26
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/ncalc-graphing-calculator-84/id1509489130/reviews.md

## What is Ncalc?

The graphing calculator provides a UI similar to a real 84 graphing calculator.

◉ Graphing Calculator
- Supports function, polar, and parametric graphs.
- Press MODE and select Graph mode, then press Y= to open the graph editor. Press GRAPH to draw the functions.
- Interactive and manual tracing modes.
- Shows intersections, roots, and extrema (local maxima and minima) of function graphs.
- Shows derivatives of function graphs.
- Shows tangents to function and polar graphs.
- Best‑fit line for a set of points.
- TABLE generates a table of values for the selected graph.
- CALC computes min, max, d/dx, and integrals of the selected graph.

◉ Scientific Calculator
- Includes a computer algebra system for symbolic calculation.
- Supports all functions of real 83 and 84 graphing calculators.
- All basic and advanced math functions: complex numbers, probability, angles, relational operations, logic operations, and matrix and vector operations.
- Users can define custom calculator functions.

◉ Equation Solver (press ALPHA ENTER to open the SOLVER menu)
- Solves any equation with Auto Solver mode and can provide symbolic roots.
- Solves quadratic, cubic, quartic, and quintic equations.
- Solves systems of equations with up to 5 variables.

◉ Statistics
- 1‑Var Stats: calculates 1‑variable statistics.
- 2‑Var Stats: calculates 2‑variable statistics.
- LinReg(ax+b): fits a linear model to data.
- QuadReg: fits a quadratic model to data.
- CubicReg: fits a cubic model to data.
- QuartReg: fits a quartic model to data.
- LinReg(a+bx): fits a linear model to data.
- LnReg: fits a logarithmic model to data.
- ExpReg: fits an exponential model to data.

◉ Inferential Statistics and Distributions
- Z‑Test, T‑Test, 2‑SampZTest, 2‑SampTTest, 1‑PropZTest, 2‑PropZTest, Z‑Interval, T‑Interval, 2‑SampZInt, 2‑SampTInt, 1‑PropZInt, 2‑PropZInt, Chi‑square Test, Chi‑square GOF Test, 2‑SampFTest, LinRegTTest, LinRegTInt, ANOVA.
- All distribution functions, including Normal, Student’s t, Chi‑square, F, binomial, and more.

◉ Get Calculator 84 Premium
Upgrade to the Premium version to access all the features above, including advanced math functions, statistics, inferential statistics and distributions, and more.

Choose from 3 subscription options:
- A 1‑month subscription
- A 1‑year subscription
- A lifetime purchase

Subscription payments will be charged to your iTunes account at confirmation of purchase and at the start of each renewal term. You can cancel at any time through your iTunes account settings. You must do this at least 24 hours before the end of the current period to avoid being charged. Cancellation takes effect the day after the current period ends, and you will be downgraded to the free service.

Terms of Service: https://calc84-efd3d.firebaseapp.com/tos.html
Privacy Policy: https://calc84-efd3d.firebaseapp.com/privacypolicy.html

## Key features

- Graphing calculator with function, polar, and parametric plots
- Scientific calculator with computer algebra system
- Equation solver for various equation types
- Extensive 1-variable and 2-variable statistics
- Inferential statistics and distribution functions
- Interactive and manual tracing modes

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Calc84 One Month | $1.99 | per month |
| Calc84 One Year | $2.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Graphing Calculator Plus | $5.99 | one-time |
| Calc84 Pro Lifetime | $5.99 | one-time |


## What do users think of Ncalc?

Overall sentiment: positive

**Pros**

- 👍 Great calculator app
- 🚀 Powerful features
- 💰 Good value for money
- 📱 Convenient mobile version of TI-84
- 🎓 Helpful for math/stats courses

**Cons**

- 🐛 Occasional crashes or bugs
- 🔍 Lack of instructions/documentation
- 💸 Premium features require additional purchase
- 🔊 Interferes with music playback
- 📱 Small button sizes on mobile

**Commonly reported bugs**

- Incorrect results for some exponent/root operations with negative numbers
- Inability to view full range of result formats for certain calculations

**Most requested features**

- Ability to edit expressions in history
- More customization options for themes/icons
- Improved handling of complex number operations
- Better support for finding all function zeros

## Recent user reviews (10 of 194)

All indexed reviews: https://appshunter.io/ios/app/ncalc-graphing-calculator-84/id1509489130/reviews.md

### 5/5 — The best ever

*2026-07-10*

I have been using this calculator for over 5 years now and it’s been amazing.

### 5/5 — Perfect Scientific Calculator

*2026-06-04*

I have been searching for app that works closely to my Casio 9759 and TI-84.
After download free version and spent 2 hrs to explore, This app is exceedingly my expectation. And I don’t hesitate to paid for lifetime version. 
It is money worthy and highly recommended.

### 5/5 — Präzision auf höchstem Niveau – jeden Cent wert

*2026-04-19*

Ich nutze die calc84 Rechner App intensiv im Alltag und kann sie ohne Einschränkung als echtes Profi-Tool bezeichnen. Die Kombination aus Funktionsumfang, Geschwindigkeit und durchdachter Benutzeroberfläche ist auf einem Niveau, das man sonst eher aus dem Ingenieursbereich kennt.

Besonders hervorzuheben ist die Möglichkeit, komplexe Formeln sauber zu strukturieren und zuverlässig auszuwerten. Genau das, was man im beruflichen Einsatz braucht: keine Spielerei, sondern präzise Ergebnisse ohne Kompromisse.

Die App wirkt bis ins Detail durchdacht – von der Eingabelogik bis zur Darstellung der Ergebnisse. Alles ist konsistent, stabil und effizient. Genau so muss ein Werkzeug funktionieren, auf das man sich verlassen will.

### 5/5 — Best Ti 84 calculator

*2026-03-20*

Excellence in design, with all the functions. I do not miss my original calculator.

### 5/5 — Excellent emulation

*2026-02-26, version 3.0.1*

Feels and works just like a TI 84

### 5/5 — Amazing!

*2026-02-18, version 3.0.1*

I legit stopped using physical calculator except on exams. Been using this for years. Great so u don’t forget how to use it 84. A,mazib product. Even the free version is great

### 3/5 — Best Calculator App - Want’s to track me?

*2026-02-17, version 3.0.1*

This is by far my favorite calculator app! It does everything! But… Why is my calculator asking to track me across other apps and websites? That’s it, I’m destroying everything I own with a network connection.

### 5/5 — One of the best calculator apps

*2026-02-11*

I’m a huge fan of this program. I typically use physical calculators, but this one always serves me in a pinch, and it has excellent references like formulas. I cannot recommend this app enough for any practical mathematicians.

### 5/5 — Gay

*2026-01-12, version 2.9.5*

Yo

### 3/5 — Loading screen annoying

*2026-01-05*

I loved using this calculator app until the recent update that added a loading screen and full screen ad before I am able to use it. This makes the app hard to use quickly and made me look for alternatives.

## Frequently asked questions about Ncalc

### What does the Ncalc - Graphing Calculator 84 app do?

This app provides a comprehensive graphing and scientific calculator experience that mimics the functionality of a Ti-84 graphing calculator. It supports graphing various functions, performing symbolic calculations, solving equations, and conducting extensive statistical analysis.

### What are the key features of this calculator app?

Key features include graphing functions (function, polar, parametric), a scientific calculator with a computer algebra system, an equation solver, detailed 1-variable and 2-variable statistics, and a wide range of inferential statistics and distribution functions.

### How much does Ncalc - Graphing Calculator 84 cost?

The app offers a freemium model. While a basic version is available, full access to advanced math functions, statistics, and inferential statistics requires an upgrade to the Premium version, which is available via a 1-month subscription, a 1-year subscription, or a lifetime purchase.

### What are common use cases for this app?

This app is ideal for students studying mathematics, physics, and statistics, as well as professionals who require a powerful calculator for complex calculations, data analysis, and graphing. It's particularly useful for those familiar with or needing the functionality of a Ti-84 calculator.

### Is this app compatible with my device?

The provided description does not specify device compatibility. However, as a mobile application, it is intended for use on smartphones and tablets. Users should check the app store listing for specific operating system requirements.

## Version history (last 5 releases)

### 3.0.2 — 2026-06-25

Thanks for using Calc84! In this update, we are excited to introduce Math OCR, a new feature that allows you to input mathematical expressions using your device's camera or photos. Simply snap a picture of a handwritten or printed equation, and Calc84 will recognize and convert it into editable text for you to work with. We hope you find Math OCR helpful and look forward to your feedback!

### 3.0.1 — 2026-02-07

Thanks for using Calc84! In this update, we are excited to introduce Math OCR, a new feature that allows you to input mathematical expressions using your device's camera or photos. Simply snap a picture of a handwritten or printed equation, and Calc84 will recognize and convert it into editable text for you to work with. We hope you find Math OCR helpful and look forward to your feedback!

### 3.0.0 — 2026-02-05

Thanks for using Calc84! In this update, we are excited to introduce Math OCR, a new feature that allows you to input mathematical expressions using your device's camera or photos. Simply snap a picture of a handwritten or printed equation, and Calc84 will recognize and convert it into editable text for you to work with. We hope you find Math OCR helpful and look forward to your feedback!

### 2.9.9 — 2026-01-27

Thanks for using Calc84! In this update, we are excited to introduce Math OCR, a new feature that allows you to input mathematical expressions using your device's camera or photos. Simply snap a picture of a handwritten or printed equation, and Calc84 will recognize and convert it into editable text for you to work with. We hope you find Math OCR helpful and look forward to your feedback!

### 2.9.6 — 2026-01-19

Thanks for using Calc84! In this update, we are excited to introduce Math OCR, a new feature that allows you to input mathematical expressions using your device's camera or photos. Simply snap a picture of a handwritten or printed equation, and Calc84 will recognize and convert it into editable text for you to work with. We hope you find Math OCR helpful and look forward to your feedback!

## Apps similar to Ncalc

| App | Rating | Price | Category |
| --- | --- | --- | --- |
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| [Symbolab - AI Math Solver App](https://appshunter.io/ios/app/symbolab-ai-math-solver-app/id876942533) | 4.6 (26,120) | Free | Education |

## More apps by Tran Duy

- [Scientific Calculator Plus 991](https://appshunter.io/ios/app/scientific-calculator-plus-991/id1449106995)

All apps by Tran Duy: https://appshunter.io/developer/1449106994

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*