---
title: "Scientific Calculator fx-991 - Отзывы, Доход и Загрузки приложения in Филиппины | Apple App Store"
description: "Scientific Calculator fx-991 – The Ultimate Math & Science Tool! Struggling with math problems, equations, or integrals?  Need a powerful scientific calculator to solve step-by-step?  With Scientific "
---

# Scientific Calculator fx-991 — Филиппины
> Step-by-step Math Solver

![Scientific Calculator fx-991 App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/30/69/64/306964b9-0c46-8351-48a4-7fe9a077768f/AppIcon-0-0-1x_U007emarketing-0-8-0-85-220.png/434x0w.png)

**Developer:** [Dinh Phuc](https://apptail.io/ru/developer/dinh-phuc-gCU) (Вьетнам)
**Category:** Education
**Rating:** 4.8/5 (202 ratings)
**Price:** Free
**Bundle ID:** dinhphuc1993.ExemplePhucnd
**Store:** Apple App Store
**Country:** Филиппины
**Version:** 1.8.8 (released 2026-05-23)
**Original Release:** 2023-02-28
**Languages:** English, Afrikaans, Albanian, Arabic, Armenian, Azerbaijani, Basque, Belarusian, Bulgarian, Catalan, Croatian, Czech, Danish, Dutch, Estonian, Finnish, French, Galician, Georgian, German, Greek (modern), Gujarati, Hebrew (modern), Hindi, Hungarian, Icelandic, Indonesian, Italian, Japanese, Kannada, Kazakh, Korean, Kirghiz, Latvian, Lithuanian, Macedonian, Malay, Malayalam, Mongolian, Nepali, Norwegian Bokmål, Persian, Polish, Portuguese, Romanian, Russian, Serbian, Chinese, Sinhala, Slovak, Slovenian, Spanish, Swedish, Thai, Turkish, Ukrainian, Urdu, Vietnamese, Zulu

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/ph/app/app/id1673640297)
**AppTail Page:** [https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/philippines](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/philippines)

## Scientific Calculator fx-991 Description
Scientific Calculator fx-991 – The Ultimate Math & Science Tool!
Struggling with math problems, equations, or integrals?  Need a powerful scientific calculator to solve step-by-step?

With Scientific Calculator fx-991, you can calculate, graph, and find formulas instantly – making learning math, physics, and chemistry easier than ever! 

Key Features
+ Step-by-step equation solver – Enter any equation and get a detailed step-by-step solution.
+ Advanced scientific functions – Solve fractions, algebra, derivatives, integrals, trigonometry, and more.
+ Graphing mode – Visualize mathematical functions interactively.
+ Extensive formula library – Access key formulas for math, physics, and chemistry in seconds.
+ Unit converter – Quickly convert between different measurement units.
+ Casio fx-991 inspired interface – A familiar and intuitive experience for students.

 Perfect for high school and college students, engineers, and professionals in STEM fields!

 Who is this app for?
High school students – Solve algebra, calculus, and physics problems efficiently.
 College & university students – Master engineering, physics, and complex math subjects.
 STEM professionals – Perform advanced calculations quickly and accurately.

 Download Scientific Calculator fx-991 now and simplify your calculations! 
Terms of Use (EULA): 

## Scientific Calculator fx-991 Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/f6/a4/ae/f6a4ae48-2798-f2f7-0de7-6f077231bd52/anh1_ios.png/1284x2778.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/43/d9/41/43d94116-8af3-5d00-0106-f3d47379f8c5/anh2_IOS.png/1284x2778.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/f1/57/16/f15716e7-16bc-50ed-3297-6b9490935db7/anh3_IOS.png/1284x2778.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/26/a3/05/26a30539-bf0e-22f4-b3ce-095cb2307cfd/3.png/1284x2778.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/46/f1/7e/46f17ec0-4de1-6a0e-175b-08846db9ccc7/4.png/1284x2778.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/bb/d6/a8/bbd6a8be-0f59-cd54-58db-d62299d0b88c/en5.png/1284x2778.png)
- [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/09/d8/7c/09d87c89-d36e-7c59-86fb-ea869ffe98a1/en6.png/1284x2778.png)

## Scientific Calculator fx-991 Rating Breakdown in Филиппины
- 5 stars: 183 (91%)
- 4 stars: 10 (5%)
- 3 stars: 5 (2%)
- 2 stars: 0 (0%)
- 1 stars: 4 (2%)

## Scientific Calculator fx-991 Reviews in Филиппины

### ***** "Good"
SOOO HELPFUL, there’s add on top of it but it’s fine
-- x4v1lat, 2026-03-29

### ***** "Wow"
It’s a very good calculator. Please download this
-- Kalvin Chua, 2026-03-10

### ***** "very accurate"
tes
-- Thousandcps, 2026-02-13

### ***-- "Small issue"
It alright, its very useful although i have one problem which is the s<>d
It seems not to be working all of the sudden, it used to work well but now its not
I cant able to know the answer in fraction but the decimals only (for example 60/360 and the answer gives me 0.1666 but i cant change it in to fraction since the s<> isnt working)
Is there any way to fix this problem?
-- poppyloppyloop, 2025-10-19

### *---- "Definite integration is not accurate"
Took me an hour what was wrong with my calculation. Turned out it was not my mistake. The definite integration of this calculator is not accurate to a very significant figure.
-- M.Eng’g-CE., 2025-06-07

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

## Scientific Calculator fx-991 In-App Purchases
| Item | Price |
|------|-------|
| Yearly Premium Access | 249.00 ₱ |
| Monthly Premium Access | 29.00 ₱ |
| 6-Month Premium Membership | 149.00 ₱ |

## Scientific Calculator fx-991 Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Топ бесплатных | Филиппины | Education | #6 |
| Топ бесплатных | Малайзия | Education | #9 |
| Топ бесплатных | Эквадор | Education | #20 |
| Топ бесплатных | Египет | Education | #26 |
| Топ бесплатных | Кувейт | Education | #28 |
| Топ бесплатных | Пакистан | Education | #30 |
| Топ бесплатных | Нигерия | Education | #32 |
| Топ бесплатных | Перу | Education | #39 |
| Топ бесплатных | Аргентина | Education | #44 |
| Топ бесплатных | Южно-Африканская Республика | Education | #52 |
| Топ бесплатных | Вьетнам | Education | #68 |
| Топ бесплатных | Таиланд | Education | #70 |
| Топ бесплатных | Ливан | Education | #90 |
| Топ бесплатных | ОАЭ | Education | #110 |
| Топ бесплатных | Сингапур | Education | #117 |
| Топ бесплатных | Колумбия | Education | #122 |
| Топ бесплатных | Израиль | Education | #123 |
| Топ бесплатных | Чили | Education | #125 |
| Топ бесплатных | Алжир | Education | #191 |
| Топ бесплатных | Саудовская Аравия | Education | #193 |
| Топ бесплатных | Мексика | Education | #225 |
| Топ бесплатных | Индия | Education | #244 |

## Scientific Calculator fx-991 Discovered Keywords
- scientific
- hiedu scientific calculator

## Apps Similar to Scientific Calculator fx-991
- [GeoGebra 图形计算器](https://apptail.io/ru/app/geogebra-dak/philippines)
- [Scientific Calculator Plus 991](https://apptail.io/ru/app/scientific-calculator-plus-991-FMq/philippines)
- [Taculator 84 Graphing Calc](https://apptail.io/ru/app/taculator-84-graphing-calc-ktr/philippines)
- [GeoGebra Scientific Calculator](https://apptail.io/ru/app/geogebra-scientific-calculator-cQRc/philippines)
- [Ncalc - Graphing Calculator 84](https://apptail.io/ru/app/ncalc-graphing-calculator-84-hQRc/philippines)
- [Math Solver Homework helper](https://apptail.io/ru/app/math-solver-homework-helper-utod/philippines)
- [ClassWiz Calc App Plus](https://apptail.io/ru/app/classwiz-calc-app-plus-lGjk/philippines)
- [Moon.vn - App học online!](https://apptail.io/ru/app/moonvn-app-hoc-online-QAQl/philippines)
- [Photo Math Solver - Math.AI](https://apptail.io/ru/app/photo-math-solver-mathai-xjxm/philippines)
- [WebEtu PROGRES](https://apptail.io/ru/app/webetu-progres-Pokn/philippines)

## Scientific Calculator fx-991 Available In
- [Вьетнам](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/vietnam)
- [Египет](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/egypt)
- [Соединенные Штаты](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/united-states)
- [Мексика](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/mexico)
- [Южно-Африканская Республика](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/south-africa)
- [Колумбия](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/colombia)
- [Перу](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/peru)
- [Алжир](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/algeria)
- [Филиппины](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/philippines)
- [Нигерия](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/nigeria)
- [Индия](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/india)
- [Гана](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/ghana)
- [Пакистан](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/pakistan)
- [Саудовская Аравия](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/saudi-arabia)
- [Малайзия](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/malaysia)
- [Аргентина](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/argentina)
- [Эквадор](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/ecuador)
- [Чили](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/chile)
- [Парагвай](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/paraguay)
- [Франция](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/france)
- [Бразилия](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/brazil)
- [ОАЭ](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/united-arab-emirates)
- [Республика Корея](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/south-korea)
- [Китай](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/china)
- [Таиланд](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/thailand)
- [Великобритания](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/united-kingdom)
- [Канада](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/canada)
- [Испания](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/spain)
- [Сингапур](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/singapore)
- [Непал](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/nepal)
- [Сенегал](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/senegal)
- [Кувейт](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/kuwait)
- [Германия](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/germany)
- [Австралия](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/australia)
- [Тунис](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/tunisia)
- [Израиль](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/israel)
- [Шри-Ланка](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/sri-lanka)
- [Италия](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/italy)
- [Индонезия](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/indonesia)
- [Оман](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/oman)
- [Панама](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/panama)
- [Уругвай](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/uruguay)
- [Катар](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/qatar)
- [Япония](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/japan)
- [Уганда](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/uganda)
- [Намибия](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/namibia)
- [Гондурас](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/honduras)
- [Иордания](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/jordan)
- [Ливан](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/lebanon)
- [Россия](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/russia)
- [Доминиканская Республика](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/dominican-republic)
- [Гонконг (САР)](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/hong-kong)
- [Кения](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/kenya)
- [Турция](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/turkey)
- [Венгрия](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/hungary)
- [Хорватия](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/croatia)
- [Тайвань](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/taiwan)
- [Польша](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/poland)
- [Греция](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/greece)
- [Португалия](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/portugal)
- [Казахстан](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/kazakhstan)
- [Украина](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/ukraine)
- [Кипр](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/cyprus)
- [Новая Зеландия](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/new-zealand)
- [Ирландия](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/ireland)
- [Бельгия](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/belgium)
- [Ямайка](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/jamaica)
- [Швеция](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/sweden)
- [Исландия](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/iceland)
- [Мадагаскар](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/madagascar)
- [Финляндия](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/finland)
- [Макао (САР)](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/macau)
- [Бахрейн](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/bahrain)
- [Ангола](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/angola)
- [Армения](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/armenia)
- [Чехия](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/czechia)
- [Эстония](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/estonia)
- [Гренада](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/grenada)
- [Швейцария](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/switzerland)
- [о-ва Кайман](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/cayman-islands)
- [Латвия](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/latvia)
- [Северная Македония](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/north-macedonia)
- [Мали](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/mali)
- [Мальта](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/malta)
- [Маврикий](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/mauritius)
- [Белиз](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/belize)
- [Беларусь](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/belarus)
- [Бруней](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/brunei)
- [Нидерланды](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/netherlands)
- [Норвегия](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/norway)
- [Бермудские о-ва](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/bermuda)
- [Азербайджан](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/azerbaijan)
- [Румыния](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/romania)
- [Словения](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/slovenia)
- [Словакия](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/slovakia)
- [Австрия](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/austria)
- [Узбекистан](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/uzbekistan)
- [Дания](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/denmark)

---

## About AppTail

[AppTail](https://apptail.io/ru) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends.

- [Search Apps](https://apptail.io/ru)
- [Top Charts](https://apptail.io/ru/top-iphone-apps)
- [Sign Up for Full Access](https://apptail.io/ru/account/signup?utm_campaign=ai-crawl&utm_content=footer)

*Data provided by [AppTail](https://apptail.io/ru) - Mobile App Intelligence Platform*