---
title: "Scientific Calculator Plus 991 - Отзывы, Доход и Загрузки приложения in Египет | Apple App Store"
description: "NCalc — Powerful Scientific Calculator, Graphing, and Converter  NCalc combines a natural-display scientific calculator, advanced maths tools, a full graphing module (as 83/84 calculator), a large for"
---

# Scientific Calculator Plus 991 — Египет
> NCalc & CalcES Calculator

![Scientific Calculator Plus 991 App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/ba/b6/cb/bab6cb8d-d866-d59d-8415-9340bc6314d2/app_icon_calces_light-0-0-1x_U007emarketing-0-11-0-85-220.png/400x400bb.png)

**Developer:** [Tran Duy](https://apptail.io/ru/developer/tran-duy-Flab)
**Category:** Education
**Rating:** 4.6/5 (6,746 ratings)
**Price:** Free
**Bundle ID:** com.duy.CasioFx
**Store:** Apple App Store
**Country:** Египет
**Version:** 3.6.1 (released 2026-06-25)
**Original Release:** 2019-04-03

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

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

NCalc combines a natural-display scientific calculator, advanced maths 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 maths.

◉ 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 calculations or evaluate numerically when needed.
- Arbitrary‑precision integers: Work with very large integers without losing accuracy.
- Output types: Choose from fraction, mixed fraction, decimal, recurring 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 Maths
- Algebra calculations: Expansion, factorisation, simplification, and more.
- Calculus calculator: Derivatives, integrals, and limits of expressions.
- Complex number calculations: Arithmetic, polar/rectangular conversion, exponential, logarithms, 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‑squared 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.
- Built‑in documentation: Access helpful guidance anytime via the Help button.

◉ Formulae
- Extensive formulae collection: Maths and Physics formulae, clearly categorised—ideal for secondary school, sixth form/college, and university students.

◉ Unit Converter
- Currency Converter: Up‑to‑date exchange rates for quick conversions.
- 1,000+ unit conversions: Length, mass, time, energy, power, temperature, pressure, data, and more—organised 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/PurpleSource221/v4/54/10/38/541038fe-f11a-8ffe-63f4-65d47e8c2a4c/0_APP_IPHONE_67_0.jpg/1290x2796.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/52/fd/79/52fd7912-5a18-405c-5423-ab8e9e30a1ea/1_APP_IPHONE_67_1.jpg/1290x2796.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/30/14/98/3014980a-915b-b258-50f5-ef819fd624ec/2_APP_IPHONE_67_2.jpg/1290x2796.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/c8/60/2a/c8602afe-f991-b710-7661-8c5e538c0bed/3_APP_IPHONE_67_3.jpg/1290x2796.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/69/25/b1/6925b1e3-3dc5-183d-760a-54ed65f37c29/4_APP_IPHONE_67_4.jpg/1290x2796.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/da/f7/41/daf74182-1c35-def6-4e82-19cab31decde/5_APP_IPHONE_67_5.jpg/1290x2796.png)
- [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/c4/a9/40/c4a940aa-8876-020f-21ea-fa3078497883/6_APP_IPHONE_67_6.jpg/1290x2796.png)
- [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/c5/3f/15/c53f15a9-a8ff-6b08-6a06-fb72704d1700/7_APP_IPHONE_67_7.jpg/1290x2796.png)

## Scientific Calculator Plus 991 Rating Breakdown in Египет
- 5 stars: 5,656 (84%)
- 4 stars: 471 (7%)
- 3 stars: 189 (3%)
- 2 stars: 106 (2%)
- 1 stars: 324 (5%)

## Scientific Calculator Plus 991 Reviews in Египет

### *---- "abs"
not goooooooooood
-- Abody2011in, 2026-01-15

### *---- "Great"
Great app for physics but unwanted ads is bad
-- Ahmed Bedear, 2025-11-13

### ***** "The best."
Best scientific calculator out there.
-- Anything McAnyone, 2025-11-11

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

## Scientific Calculator Plus 991 In-App Purchases
| Item | Price |
|------|-------|
| Calculator Premium | EGP 299.99 |
| Calculator month subscription | EGP 69.99 |
| Calculator yearly subscription | EGP 149.99 |
| Calculator Pro | EGP 299.99 |

## Scientific Calculator Plus 991 Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Топ бесплатных | Филиппины | Education | #15 |
| Топ бесплатных | Египет | Education | #15 |
| Топ бесплатных | Вьетнам | Education | #19 |
| Топ бесплатных | Малайзия | Education | #36 |
| Топ бесплатных | Перу | Education | #38 |
| Топ бесплатных | Колумбия | Education | #46 |
| Топ бесплатных | Пакистан | Education | #47 |
| Топ бесплатных | Сингапур | Education | #48 |
| Топ бесплатных | Алжир | Education | #56 |
| Топ бесплатных | Кувейт | Education | #57 |
| Топ бесплатных | Эквадор | Education | #72 |
| Топ бесплатных | Мексика | Education | #73 |
| Топ бесплатных | Аргентина | Education | #75 |
| Топ бесплатных | Саудовская Аравия | Education | #79 |
| Топ бесплатных | ОАЭ | Education | #88 |
| Топ бесплатных | Венгрия | Education | #89 |
| Топ бесплатных | Таиланд | Education | #95 |
| Топ бесплатных | Южно-Африканская Республика | Education | #101 |
| Топ бесплатных | Чехия | Education | #113 |
| Топ бесплатных | Нигерия | Education | #127 |
| Топ бесплатных | Доминиканская Республика | Education | #127 |
| Топ бесплатных | Ливан | Education | #133 |
| Топ бесплатных | Индонезия | Education | #144 |
| Топ бесплатных | Израиль | Education | #154 |
| Топ бесплатных | Чили | Education | #162 |
| Топ бесплатных | Индия | Education | #163 |
| Топ бесплатных | Германия | Education | #176 |
| Топ бесплатных | Великобритания | Education | #179 |
| Топ бесплатных | Финляндия | Education | #203 |
| Топ бесплатных | Испания | Education | #229 |
| Топ бесплатных | Вьетнам | Overall | #239 |

## Scientific Calculator Plus 991 Discovered Keywords
- mathemagics
- n/a
- calculator
- algebra math solver
- fx calculators
- charts and graphs
- ncalc scientific calculator
- csl
- math fun
- 计算器

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---

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