---
title: "Scientific Calculator Plus 991 - Reviews, Revenue and Downloads in Philippines | 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 — Philippines
> NCalc & CalcES Calculator

![Scientific Calculator Plus 991 App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/bf/05/78/bf05788e-79b8-59ea-dfdc-9200bc568907/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:** 4.7/5 (5,271 ratings)
**Price:** Free
**Bundle ID:** com.duy.CasioFx
**Store:** Apple App Store
**Country:** Philippines
**Version:** 3.5.8 (released 2026-05-05)
**Original Release:** 2019-04-03
**Languages:** English, Albanian, Arabic, Armenian, Azerbaijani, Basque, Belarusian, Bengali, Bosnian, Bulgarian, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek (modern), Hebrew (modern), Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Lao, Latvian, Lithuanian, Macedonian, Malay, Malayalam, Oriya, Persian, Polish, Portuguese, Panjabi, Romanian, Russian, Serbian, Chinese, Slovak, Spanish, Swahili, Swedish, Thai, Turkish, Ukrainian, Vietnamese

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

## 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/PurpleSource211/v4/6c/69/9f/6c699fb3-5ad2-d58b-e390-36076602bc50/0_APP_IPAD_PRO_3GEN_129_0.jpg/2048x2732.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/9f/b8/18/9fb81897-ad32-6ed0-a085-40ee11961499/1_APP_IPAD_PRO_3GEN_129_1.jpg/2048x2732.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/15/46/67/154667f7-5797-600d-be19-155b9d0149b5/2_APP_IPAD_PRO_3GEN_129_2.jpg/2048x2732.png)

## Scientific Calculator Plus 991 Rating Breakdown in Philippines
- 5 stars: 4,546 (86%)
- 4 stars: 371 (7%)
- 3 stars: 170 (3%)
- 2 stars: 65 (1%)
- 1 stars: 119 (2%)

## Scientific Calculator Plus 991 Reviews in Philippines

### ***** "Best Choice"
This is the scientific calculator that i have used and even recommended my students to use.
-- Mitchykokie, 2024-11-25

### ***** "Best Scientific Calculator App"
Features all the basic and advance functions of a latest scientific calculator. And the best thing is it's an affordable one-time purchase only.
-- Kuriskuris, 2024-10-21

### ***** "Full-functioning calculator app"
It got all I need. How I wish this has the step-by-step solution as well like Wolfram haha
-- ChooseTools, 2024-10-18

### ***** "student review"
VERYYYT HELPULLLLLLLL AAAAAA ILOVETHISS
-- Reyaleyn, 2024-09-17

### ***** "Ncalc fx"
1. Very useful. No need to buy real calculator. All functions that needed are already here.
2. You have to pay after 3 days trial. There are option: monthly, yearly, or lifetime. 
3. Overall it’s worth the money. All we need is to familiarize other unfamiliarity functions.
-- Jong234485, 2024-05-20

### ***** "Verry reliable"
Everything i dont know is here and teaching verry good app
-- El Pablo S. Cobar, 2024-04-05

### ***** "jerusalem"
thanks god!🤍🫂🥰
-- karlpanget, 2024-04-03

### ***** "Very useful and affordable"
It’s very useful for its lifetime price. Highly recommended
-- Ethan Engr, 2024-03-31

### ****- "History"
How do I turn off the question “Insert expression to the editor?”. I prefer the old way of just being able to click on the history and edit it without it being put on the current one.
-- JakeMichael1990, 2024-02-08

### ***** "Best calculator app"
Very handy. Best calculator app. Thank you developers.
-- Happy2bSadie, 2024-01-03

### ***** "Excellent"
Very Useful
-- katolsagemode30, 2023-08-10

### ***** "Super good"
As of June 4, 2023 this app is still great for me since the scientific calculator i used before, turns to scientific notations every time i solve for bigger numbers, so this is a really good app to have lots of different forms of one answer (example: percentage, scientific notation, decimal, engineer notation.. etc) and it can solve bigger numbers as well but i don't know about the graphing since i haven't used it. You guys should download and stan newjeans for clear skin 🫶🫶
-- TaehyungsLegalWifeu, 2023-06-04

### ***** "."
This app helps me alot❤️
-- Váńdesimmm, 2023-05-24

### ***** "To rebuild, we must first destroy…"
To rebuild, we must first destroy…
-- Aetherwing Kayle, 2023-05-20

### ***** "Useful App"
More than a calculator, it is.
-- wh@tever016, 2023-05-16

### ***-- "No hyperbolic functions"
Ive looked and looked but I am frustrated not t find hyperbolic functions. No Sinh, no Cosh, no Tanh. Also there are no Secnt and Cosecant..
-- jazz_up, 2023-03-06

### ****- "Just a nitpick."
Functionally, this is the best calculator app I’ve tried. The themes are also great. What bugs me is the blue arrow emoji on the “2nd” button, it doesn’t match any of the themes. Sticks out like a sore thumb. 

Remove the emoji, maybe. Lol. Thanks.
-- ordinarycritic, 2023-02-13

### ***** "Works like a charm"
An perfect replacement for a physical scientific calculator
-- Paranoid_Paradigm, 2023-01-18

### ***** "This app is t i e r"
Vv helpful features: 

✔️ the use of shift & alpha
✔️ calculation mode: math, cmplx, stat, base-n, table, matrix, vector… (a few features here are not free but those that are r worth it)
✔️ decimal - fraction & degree - radian switch
✔️ unit converters 
✔️ math formulas - geometry, algebra, trigo…thermal physics, periodic motion, optics… (there’s a lot of them; there’s even math tricks here) -> all of these come handy when learning ways to solve.
✔️ choose fonts 
✔️ memory (though limited to 15 entries (free ver), I don’t mind)

I haven’t explored all the features yet since I just got this app buT it’s worth a try. Thank you to the devs n everyone who contributed to this. It’s super helpful. 🫶
-- s. :], 2023-01-05

### ***** "Great"
Very useful app
-- Azekiel 0819, 2022-12-13

[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 | 199.00 ₱ |
| Calculator premium | 299.00 ₱ |
| Calculator month subscription | 99.00 ₱ |
| Calculator yearly subscription | 199.00 ₱ |

## Scientific Calculator Plus 991 Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Free | Philippines | Education | #11 |
| Top Free | Malaysia | Education | #22 |
| Top Free | Vietnam | Education | #32 |
| Top Free | Thailand | Education | #44 |
| Top Free | Pakistan | Education | #51 |
| Top Free | Peru | Education | #55 |
| Top Free | Egypt | Education | #67 |
| Top Free | Argentina | Education | #68 |
| Top Free | Ecuador | Education | #70 |
| Top Free | Nigeria | Education | #71 |
| Top Free | Saudi Arabia | Education | #77 |
| Top Free | United Arab Emirates | Education | #84 |
| Top Free | Singapore | Education | #89 |
| Top Free | Israel | Education | #91 |
| Top Free | Kuwait | Education | #98 |
| Top Free | South Africa | Education | #139 |
| Top Free | Mexico | Education | #139 |
| Top Free | Colombia | Education | #159 |
| Top Free | Germany | Education | #166 |
| Top Free | Australia | Education | #183 |
| Top Free | United Kingdom | Education | #196 |
| Top Free | Algeria | Education | #210 |
| Top Free | Lebanon | Education | #250 |
| Top Free | Spain | Education | #290 |
| Top Free | Chile | Education | #305 |
| Top Free | Hungary | Education | #315 |
| Top Free | Greece | Education | #327 |
| Top Free | Philippines | Overall | #351 |
| Top Free | New Zealand | Education | #357 |
| Top Free | Indonesia | Education | #368 |
| Top Free | India | Education | #382 |
| Top Free | Czechia | Education | #407 |
| Top Free | Austria | Education | #461 |
| Top Free | Vietnam | Overall | #467 |
| Top Free | Belgium | Education | #496 |

## Scientific Calculator Plus 991 Discovered Keywords
- n/a
- calculator
- calc
- calculator hd
- ncalc scientific calculator
- 计算器
- calcularium
- algebra calculator
- acalc
- cowculator

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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)
- [Ghana](https://apptail.io/app/scientific-calculator-plus-991-FMq/ghana)
- [Malaysia](https://apptail.io/app/scientific-calculator-plus-991-FMq/malaysia)
- [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)
- [Sri Lanka](https://apptail.io/app/scientific-calculator-plus-991-FMq/sri-lanka)
- [France](https://apptail.io/app/scientific-calculator-plus-991-FMq/france)
- [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)
- [Panama](https://apptail.io/app/scientific-calculator-plus-991-FMq/panama)
- [Paraguay](https://apptail.io/app/scientific-calculator-plus-991-FMq/paraguay)
- [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)
- [Belgium](https://apptail.io/app/scientific-calculator-plus-991-FMq/belgium)
- [Czechia](https://apptail.io/app/scientific-calculator-plus-991-FMq/czechia)
- [Senegal](https://apptail.io/app/scientific-calculator-plus-991-FMq/senegal)
- [Kenya](https://apptail.io/app/scientific-calculator-plus-991-FMq/kenya)
- [Portugal](https://apptail.io/app/scientific-calculator-plus-991-FMq/portugal)
- [Russia](https://apptail.io/app/scientific-calculator-plus-991-FMq/russia)
- [Poland](https://apptail.io/app/scientific-calculator-plus-991-FMq/poland)
- [Switzerland](https://apptail.io/app/scientific-calculator-plus-991-FMq/switzerland)
- [Austria](https://apptail.io/app/scientific-calculator-plus-991-FMq/austria)
- [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)
- [Uruguay](https://apptail.io/app/scientific-calculator-plus-991-FMq/uruguay)
- [Greece](https://apptail.io/app/scientific-calculator-plus-991-FMq/greece)
- [Norway](https://apptail.io/app/scientific-calculator-plus-991-FMq/norway)
- [Slovakia](https://apptail.io/app/scientific-calculator-plus-991-FMq/slovakia)
- [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)
- [Ukraine](https://apptail.io/app/scientific-calculator-plus-991-FMq/ukraine)
- [Croatia](https://apptail.io/app/scientific-calculator-plus-991-FMq/croatia)
- [Romania](https://apptail.io/app/scientific-calculator-plus-991-FMq/romania)
- [Bulgaria](https://apptail.io/app/scientific-calculator-plus-991-FMq/bulgaria)
- [Mali](https://apptail.io/app/scientific-calculator-plus-991-FMq/mali)
- [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)
- [Lithuania](https://apptail.io/app/scientific-calculator-plus-991-FMq/lithuania)
- [Armenia](https://apptail.io/app/scientific-calculator-plus-991-FMq/armenia)
- [Azerbaijan](https://apptail.io/app/scientific-calculator-plus-991-FMq/azerbaijan)
- [Belarus](https://apptail.io/app/scientific-calculator-plus-991-FMq/belarus)
- [Mauritius](https://apptail.io/app/scientific-calculator-plus-991-FMq/mauritius)
- [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)
- [Madagascar](https://apptail.io/app/scientific-calculator-plus-991-FMq/madagascar)
- [Suriname](https://apptail.io/app/scientific-calculator-plus-991-FMq/suriname)
- [Bermuda](https://apptail.io/app/scientific-calculator-plus-991-FMq/bermuda)
- [Belize](https://apptail.io/app/scientific-calculator-plus-991-FMq/belize)
- [North Macedonia](https://apptail.io/app/scientific-calculator-plus-991-FMq/north-macedonia)
- [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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