---
title: "Scientific calculator plus 991 - Reviews, Revenue and Downloads in Canada | Apple App Store"
description: "NCalc — Powerful Scientific Calculator, Graphing, and Converter  NCalc combines a natural-display scientific calculator, advanced math tools, a full graphing module (as 83/84 calculator), a large form"
---

# Scientific calculator plus 991 — Canada
> NCalc & CalcES Calculator

![Scientific calculator plus 991 App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/6d/c9/b0/6dc9b025-64d7-e136-0a39-bd1d7e1c870d/app_icon_calces_light-0-0-1x_U007emarketing-0-11-0-85-220.png/434x0w.png)

**Developer:** [Tran Duy](https://apptail.io/developer/tran-duy-Flab)
**Category:** Education
**Rating:** 4.8/5 (1,545 ratings)
**Price:** Free
**Bundle ID:** com.duy.CasioFx
**Store:** Apple App Store
**Country:** Canada
**Version:** 3.5.7 (released 2026-04-19)
**Original Release:** 2019-04-03
**Languages:** Portuguese, Albanian, German, Armenian, Azerbaijani, Bengali, Belarusian, Bosnian, Bulgarian, Kannada, Catalan, Czech, Chinese, Korean, Croatian, Danish, Slovak, Spanish, Finnish, French, Greek (modern), Hebrew (modern), Hindi, Dutch, Hungarian, Indonesian, English, Italian, Japanese, Lao, Latvian, Lithuanian, Macedonian, Malayalam, Malay, Oriya, Persian, Polish, Panjabi, Romanian, Russian, Swahili, Swedish, Serbian, Thai, Turkish, Ukrainian, Basque, Vietnamese, Arabic

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/ca/app/app/id1449106995)
**AppTail Page:** [https://apptail.io/app/scientific-calculator-plus-991-FMq/canada](https://apptail.io/app/scientific-calculator-plus-991-FMq/canada)

## Scientific calculator plus 991 Description
NCalc — Powerful Scientific Calculator, Graphing, and Converter

NCalc combines a natural-display scientific calculator, advanced math tools, a full graphing module (as 83/84 calculator), a large formula library, and a comprehensive unit and currency converter—designed for students, engineers, and anyone who loves math.

◉ Main Calculator Features
- Natural display: Enter expressions exactly as in textbooks—fractions, roots, exponents, and more—see results as written on paper.
- Keyboard layout: Matches popular models for familiarity and speed: 115 ES Plus, 991 ES Plus, 300 ES Plus, and 991 EX.
- Symbolic and numeric modes: Perform exact fraction calculation or evaluate numerically when needed.
- Arbitrary precision integers: Work with very large integers without losing accuracy.
- Output types: Choose from fraction, mixed number, decimal, repeating decimal, degrees/minutes/seconds, and polar coordinates.
- Angle units: Degree, radian, and gradian (grade).
- Decimal formatter: Display numbers in normal, engineering, engineering SI, scientific, or fixed formats.
- Calculation history: Review and reuse past calculations with ease.
- Copy and paste support for fast data entry and sharing.

◉ Algebra, Calculus, and Core Math
- Algebra calculation: Expansion, factorization, simplification, and more.
- Calculus calculator: Derivatives, integrals, and limits of expressions.
- Complex number calculation: Arithmetic, polar/rectangular conversion, exponential, logarithm, powers, roots, and full trigonometric functions.

◉ Equations and Inequalities
- Equation solver: Solve general equations, plus dedicated solvers for quadratic, cubic, and quartic equations.
- System of equations solver: Solve systems with 2, 3, or 4 variables.
- Inequality solvers: Quadratic, cubic, and quartic inequalities with interval-based solutions.

◉ Matrices and Vectors
- Operations: Addition, subtraction, multiplication for matrices and vectors.
- Advanced tools: Determinant, inverse, transpose, rank, eigenvalues, and eigenvectors.

◉ Statistics and Distributions
- Statistical calculation: Descriptive stats and regression calculation (including a regression plotter).
- Distribution calculation: Normal distribution, binomial distribution, Poisson distribution, t-distribution, chi-square distribution, and F-distribution.

◉ Number Bases and Formats
- Base N calculation: Effortlessly switch between binary, octal, decimal, and hexadecimal, with arithmetic in each base.

◉ Tables, Variables, and Custom Functions
- Table Generator: Generate value tables based on any expression and range.
- Calculator variables: Store values and reuse them across calculations.
- User-defined functions: Create your own functions to streamline repetitive work.

◉ Built‑ins and Help
- Built-in constants: A rich set of mathematical and physical constants.
- Extensive formula collection: Math and Physics formulas, clearly categorized—ideal for secondary school, high school, and university students.
- Currency Converter: Up-to-date exchange rates for quick conversions.
- 1,000+ unit conversions: Length, mass, time, energy, power, temperature, pressure, data, and more—organized for fast lookup.

◉ Auto-renewing subscription
You may purchase an auto-renewing subscription through an In-App Purchase.
• Auto-renewable subscription
• Your subscription will be charged to your AppStore account at confirmation of purchase and will automatically renew (at the duration selected) unless auto-renew is turned off at least 24 hours before the end of the current period.
• Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your AppStore Account Settings after purchase
• Privacy policy and terms of use: 

## Scientific calculator plus 991 Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/24/d7/b8/24d7b8ae-0aa7-eae7-93d6-c67da065c1d5/0_APP_IPAD_PRO_3GEN_129_0.jpg/2048x2732.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/14/e6/e4/14e6e45e-c873-2e44-5bcf-2ac7d94d8d7d/1_APP_IPAD_PRO_3GEN_129_1.jpg/2048x2732.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/d2/3b/52/d23b52db-f3a9-93a3-4494-02aeb1f945ac/2_APP_IPAD_PRO_3GEN_129_2.jpg/2048x2732.png)

## Scientific calculator plus 991 Rating Breakdown in Canada
- 5 stars: 1,313 (85%)
- 4 stars: 149 (10%)
- 3 stars: 36 (2%)
- 2 stars: 17 (1%)
- 1 stars: 30 (2%)

## Scientific calculator plus 991 Reviews in Canada

### ****- "Me"
Good app
-- Fawavy, 2024-11-04

### ***** "The most wonderful app for calculating"
I wish I can give this app 10 stars! It is super useful.
-- ki_chun, 2024-10-17

### **--- "Used to like this calculator but not anymore"
This calculator was tolerable but not anymore.  The UI is kinda weird (see below) but it was usable.  The recent update has made this app almost unusable.  It regularly stops taking input from the keyboard on my Mac for no apparant reason.  It simply beeps when I press a key with no visual error.  I have to quit the app and restart to get it to work again.  Also, you should be able to click and change anything on the screen and have the calculator recalculate everything.  But for some reason you cannot do this.  Moreover the arrow keys don't let you move the cursor around.  This app needs some love.
-- Steve0303, 2024-09-19

### ***** "Love it"
My favourite and go to calculator app, works amazing, the set up is great, and I can download it on all my devices. 10/10.
-- Wingangel166, 2024-08-14

### ***** "Beyond expectations"
I was looking for a calculator with a history of previous calculations, that you can copy and use again with changes. I also wanted memories, with a fast and simple layout. NCALC is the only calculator on iOS that I have found that has these features. 

There is way more, I have found. Many things that remind me of university courses, as well as plenty of stuff that I have no idea how to use. 

You can make your own functions pretty easily (foreign exchange, tipping, interest payments…). There are easy unit conversion functions included. I am having fun with the graphing as well. 

Well done!!
-- Feddar, 2024-07-14

### ***** "Excellente application"
J’adore !!!
-- BTOTech, 2024-07-11

### ***** "Greatest Calculator App Ever"
11/10 God bless this app, I hate using other calculator apps when I don’t have a real one on hand because they’re all clunky and odd. This app has helped me so so much throughout my degree and is absolutely perfect.
-- Wingangel166, 2024-07-11

### ***** "Professional"
Fantastic calculator packed with so many features!
-- planitcomp, 2024-03-31

### ***** "Awesome!"
I forgot my calculator, I had a whole document (sec4 advanced math) to do before and exam. I tried other apps but this one has all the keys a needed. It was like having my calculator with me. I was impressed, pretty similar to my calculator so it was not hard to understand compared to other apps. Definitely recommend if you need to calculate fractions, parabolic diagrams or equations.
-- 🫶🫰m, 2024-03-07

### ***-- "kinda off but on"
they spam for a review and theres not enought tutorial
-- Mathis Le Garrec, 2024-02-18

### ***** "I use it on my mac ipad and iphone"
title explains it. Love it
-- monorey13, 2023-12-20

### ***** "Best calculator for maths and physics students"
Best go for it
-- Shakti Bharat, 2023-11-04

### ***** "Life saver"
So far so good. As a PhD student in electrical engineering, this app is very useful, especially its matrix calculations and complex number manipulation. I’m using it not only for my research but also for my daily life calculations.
-- MANASRX, 2023-10-13

### ***** "Great app"
Thank you
-- Sherif Mostafa 2024, 2023-07-27

### ***** "NCalc"
Anyone interested in a good calculator should give NCalc a try... I've been using it now for a few months and I'm happy to say it's probably the best calculator I've ever owned... I got this calculator on my Mac, iPhone and iPad.  

It's a very feature rich calculator.  You can enter written formulas in as you would see them in a text book.  I highly reccommend it!
-- PixelCanvasDesign, 2023-07-14

### ***** "Engineer’s best friend"
I am an electrical engineer and I often need to quick check my calculations with complex numbers. This calculator is my go to for everyday calculation and made me ditch my physical Casio Es calculator.
-- Mikki Mac, 2023-07-06

### ***** "Worth the download"
Best calculator I’ve ever used. Also it teaches you to do mental math, which is ironic.
-- tufnueu, 2023-05-24

### ***** "very professional calc"
highly recommend
-- calc math, 2023-05-04

### ***** "Good"
finally a good calculator for ios & mac
-- nnnaavid, 2023-04-22

### ***** "Most Helpful App"
I love how it can do matrices calculations. Saves me a lot of time and work in linear algebra. One suggestion I want to make is when calculating eigenvalues and eigenvectors, it’s better to show which eigenvector is corresponding to which eigenvalue.
-- FrSCN_硫氰酸钫🉑️, 2023-04-09

[View all Scientific calculator plus 991 reviews and detailed analytics on AppTail](https://apptail.io/account/signup?utm_campaign=ai-crawl&utm_content=reviews)

## Scientific calculator plus 991 In-App Purchases
| Item | Price |
|------|-------|
| Calculator Pro | $4.99 |
| Calculator premium | $7.99 |
| Calculator month subscription | $2.99 |
| Calculator yearly subscription | $4.99 |

## Scientific calculator plus 991 Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Free | Egypt | Education | #18 |
| Top Free | Vietnam | Education | #19 |
| Top Free | Algeria | Education | #20 |
| Top Free | Pakistan | Education | #32 |
| Top Free | Singapore | Education | #35 |
| Top Free | Malaysia | Education | #36 |
| Top Free | Philippines | Education | #39 |
| Top Free | Peru | Education | #42 |
| Top Free | Kuwait | Education | #42 |
| Top Free | Israel | Education | #48 |
| Top Free | Argentina | Education | #51 |
| Top Free | Colombia | Education | #54 |
| Top Free | Ecuador | Education | #63 |
| Top Free | Mexico | Education | #75 |
| Top Free | Nigeria | Education | #79 |
| Top Free | Czechia | Education | #86 |
| Top Free | Thailand | Education | #87 |
| Top Free | Saudi Arabia | Education | #91 |
| Top Free | South Africa | Education | #94 |
| Top Free | United Arab Emirates | Education | #104 |
| Top Free | Germany | Education | #135 |
| Top Free | Spain | Education | #145 |
| Top Free | United Kingdom | Education | #158 |
| Top Free | Hungary | Education | #213 |
| Top Free | Indonesia | Education | #225 |
| Top Free | Chile | Education | #238 |
| Top Free | Australia | Education | #251 |
| Top Free | Taiwan | Education | #271 |
| Top Free | Lebanon | Education | #278 |
| Top Free | Ireland | Education | #297 |
| Top Free | Poland | Education | #308 |
| Top Free | Vietnam | Overall | #313 |
| Top Free | Belgium | Education | #335 |
| Top Free | India | Education | #372 |
| Top Free | Finland | Education | #377 |
| Top Free | Hong Kong SAR China | Education | #405 |
| Top Free | Canada | Education | #449 |
| Top Free | Brazil | Education | #472 |
| Top Free | United States | Education | #481 |
| Top Free | Portugal | Education | #486 |

## Scientific calculator plus 991 Discovered Keywords
- calc
- máy tính
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## Scientific calculator plus 991 Available In
- [Vietnam](https://apptail.io/app/scientific-calculator-plus-991-FMq/vietnam)
- [China](https://apptail.io/app/scientific-calculator-plus-991-FMq/china)
- [United States](https://apptail.io/app/scientific-calculator-plus-991-FMq/united-states)
- [Saudi Arabia](https://apptail.io/app/scientific-calculator-plus-991-FMq/saudi-arabia)
- [Germany](https://apptail.io/app/scientific-calculator-plus-991-FMq/germany)
- [Thailand](https://apptail.io/app/scientific-calculator-plus-991-FMq/thailand)
- [Egypt](https://apptail.io/app/scientific-calculator-plus-991-FMq/egypt)
- [Mexico](https://apptail.io/app/scientific-calculator-plus-991-FMq/mexico)
- [United Kingdom](https://apptail.io/app/scientific-calculator-plus-991-FMq/united-kingdom)
- [Philippines](https://apptail.io/app/scientific-calculator-plus-991-FMq/philippines)
- [Malaysia](https://apptail.io/app/scientific-calculator-plus-991-FMq/malaysia)
- [Ghana](https://apptail.io/app/scientific-calculator-plus-991-FMq/ghana)
- [India](https://apptail.io/app/scientific-calculator-plus-991-FMq/india)
- [South Africa](https://apptail.io/app/scientific-calculator-plus-991-FMq/south-africa)
- [Colombia](https://apptail.io/app/scientific-calculator-plus-991-FMq/colombia)
- [Australia](https://apptail.io/app/scientific-calculator-plus-991-FMq/australia)
- [United Arab Emirates](https://apptail.io/app/scientific-calculator-plus-991-FMq/united-arab-emirates)
- [Spain](https://apptail.io/app/scientific-calculator-plus-991-FMq/spain)
- [Brazil](https://apptail.io/app/scientific-calculator-plus-991-FMq/brazil)
- [Peru](https://apptail.io/app/scientific-calculator-plus-991-FMq/peru)
- [Singapore](https://apptail.io/app/scientific-calculator-plus-991-FMq/singapore)
- [Canada](https://apptail.io/app/scientific-calculator-plus-991-FMq/canada)
- [Pakistan](https://apptail.io/app/scientific-calculator-plus-991-FMq/pakistan)
- [Chile](https://apptail.io/app/scientific-calculator-plus-991-FMq/chile)
- [Nigeria](https://apptail.io/app/scientific-calculator-plus-991-FMq/nigeria)
- [Kuwait](https://apptail.io/app/scientific-calculator-plus-991-FMq/kuwait)
- [Argentina](https://apptail.io/app/scientific-calculator-plus-991-FMq/argentina)
- [Israel](https://apptail.io/app/scientific-calculator-plus-991-FMq/israel)
- [Ecuador](https://apptail.io/app/scientific-calculator-plus-991-FMq/ecuador)
- [Indonesia](https://apptail.io/app/scientific-calculator-plus-991-FMq/indonesia)
- [South Korea](https://apptail.io/app/scientific-calculator-plus-991-FMq/south-korea)
- [Qatar](https://apptail.io/app/scientific-calculator-plus-991-FMq/qatar)
- [France](https://apptail.io/app/scientific-calculator-plus-991-FMq/france)
- [Sri Lanka](https://apptail.io/app/scientific-calculator-plus-991-FMq/sri-lanka)
- [Algeria](https://apptail.io/app/scientific-calculator-plus-991-FMq/algeria)
- [Hong Kong SAR China](https://apptail.io/app/scientific-calculator-plus-991-FMq/hong-kong)
- [Japan](https://apptail.io/app/scientific-calculator-plus-991-FMq/japan)
- [Taiwan](https://apptail.io/app/scientific-calculator-plus-991-FMq/taiwan)
- [Oman](https://apptail.io/app/scientific-calculator-plus-991-FMq/oman)
- [Italy](https://apptail.io/app/scientific-calculator-plus-991-FMq/italy)
- [Bahrain](https://apptail.io/app/scientific-calculator-plus-991-FMq/bahrain)
- [Nepal](https://apptail.io/app/scientific-calculator-plus-991-FMq/nepal)
- [Paraguay](https://apptail.io/app/scientific-calculator-plus-991-FMq/paraguay)
- [Panama](https://apptail.io/app/scientific-calculator-plus-991-FMq/panama)
- [Türkiye](https://apptail.io/app/scientific-calculator-plus-991-FMq/turkey)
- [Jordan](https://apptail.io/app/scientific-calculator-plus-991-FMq/jordan)
- [Hungary](https://apptail.io/app/scientific-calculator-plus-991-FMq/hungary)
- [Uganda](https://apptail.io/app/scientific-calculator-plus-991-FMq/uganda)
- [Dominican Republic](https://apptail.io/app/scientific-calculator-plus-991-FMq/dominican-republic)
- [Tunisia](https://apptail.io/app/scientific-calculator-plus-991-FMq/tunisia)
- [Senegal](https://apptail.io/app/scientific-calculator-plus-991-FMq/senegal)
- [Belgium](https://apptail.io/app/scientific-calculator-plus-991-FMq/belgium)
- [Czechia](https://apptail.io/app/scientific-calculator-plus-991-FMq/czechia)
- [Kenya](https://apptail.io/app/scientific-calculator-plus-991-FMq/kenya)
- [Russia](https://apptail.io/app/scientific-calculator-plus-991-FMq/russia)
- [Switzerland](https://apptail.io/app/scientific-calculator-plus-991-FMq/switzerland)
- [Austria](https://apptail.io/app/scientific-calculator-plus-991-FMq/austria)
- [Portugal](https://apptail.io/app/scientific-calculator-plus-991-FMq/portugal)
- [Poland](https://apptail.io/app/scientific-calculator-plus-991-FMq/poland)
- [Lebanon](https://apptail.io/app/scientific-calculator-plus-991-FMq/lebanon)
- [Cyprus](https://apptail.io/app/scientific-calculator-plus-991-FMq/cyprus)
- [Ireland](https://apptail.io/app/scientific-calculator-plus-991-FMq/ireland)
- [Honduras](https://apptail.io/app/scientific-calculator-plus-991-FMq/honduras)
- [Netherlands](https://apptail.io/app/scientific-calculator-plus-991-FMq/netherlands)
- [New Zealand](https://apptail.io/app/scientific-calculator-plus-991-FMq/new-zealand)
- [Norway](https://apptail.io/app/scientific-calculator-plus-991-FMq/norway)
- [Uruguay](https://apptail.io/app/scientific-calculator-plus-991-FMq/uruguay)
- [Greece](https://apptail.io/app/scientific-calculator-plus-991-FMq/greece)
- [Sweden](https://apptail.io/app/scientific-calculator-plus-991-FMq/sweden)
- [Finland](https://apptail.io/app/scientific-calculator-plus-991-FMq/finland)
- [Namibia](https://apptail.io/app/scientific-calculator-plus-991-FMq/namibia)
- [Angola](https://apptail.io/app/scientific-calculator-plus-991-FMq/angola)
- [Slovakia](https://apptail.io/app/scientific-calculator-plus-991-FMq/slovakia)
- [Ukraine](https://apptail.io/app/scientific-calculator-plus-991-FMq/ukraine)
- [Croatia](https://apptail.io/app/scientific-calculator-plus-991-FMq/croatia)
- [Mali](https://apptail.io/app/scientific-calculator-plus-991-FMq/mali)
- [Romania](https://apptail.io/app/scientific-calculator-plus-991-FMq/romania)
- [Bulgaria](https://apptail.io/app/scientific-calculator-plus-991-FMq/bulgaria)
- [Jamaica](https://apptail.io/app/scientific-calculator-plus-991-FMq/jamaica)
- [Slovenia](https://apptail.io/app/scientific-calculator-plus-991-FMq/slovenia)
- [Luxembourg](https://apptail.io/app/scientific-calculator-plus-991-FMq/luxembourg)
- [Denmark](https://apptail.io/app/scientific-calculator-plus-991-FMq/denmark)
- [Macao SAR China](https://apptail.io/app/scientific-calculator-plus-991-FMq/macau)
- [Uzbekistan](https://apptail.io/app/scientific-calculator-plus-991-FMq/uzbekistan)
- [Malta](https://apptail.io/app/scientific-calculator-plus-991-FMq/malta)
- [Kazakhstan](https://apptail.io/app/scientific-calculator-plus-991-FMq/kazakhstan)
- [Armenia](https://apptail.io/app/scientific-calculator-plus-991-FMq/armenia)
- [Lithuania](https://apptail.io/app/scientific-calculator-plus-991-FMq/lithuania)
- [Azerbaijan](https://apptail.io/app/scientific-calculator-plus-991-FMq/azerbaijan)
- [Belarus](https://apptail.io/app/scientific-calculator-plus-991-FMq/belarus)
- [Iceland](https://apptail.io/app/scientific-calculator-plus-991-FMq/iceland)
- [Brunei](https://apptail.io/app/scientific-calculator-plus-991-FMq/brunei)
- [Estonia](https://apptail.io/app/scientific-calculator-plus-991-FMq/estonia)
- [Mauritius](https://apptail.io/app/scientific-calculator-plus-991-FMq/mauritius)
- [Madagascar](https://apptail.io/app/scientific-calculator-plus-991-FMq/madagascar)
- [Bermuda](https://apptail.io/app/scientific-calculator-plus-991-FMq/bermuda)
- [Suriname](https://apptail.io/app/scientific-calculator-plus-991-FMq/suriname)
- [North Macedonia](https://apptail.io/app/scientific-calculator-plus-991-FMq/north-macedonia)
- [Belize](https://apptail.io/app/scientific-calculator-plus-991-FMq/belize)
- [Latvia](https://apptail.io/app/scientific-calculator-plus-991-FMq/latvia)
- [Cayman Islands](https://apptail.io/app/scientific-calculator-plus-991-FMq/cayman-islands)
- [Grenada](https://apptail.io/app/scientific-calculator-plus-991-FMq/grenada)

---

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