---
title: "Scientific Calculator fx-991 - Отзывы, Доход и Загрузки приложения in Южно-Африканская Республика | 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 — Южно-Африканская Республика
> Step-by-step Math Solver

![Scientific Calculator fx-991 App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/b3/f2/83/b3f2837f-a7c3-f6a6-d5e1-a26d390d66d9/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:** 4.7/5 (328 ratings)
**Price:** Free
**Bundle ID:** dinhphuc1993.ExemplePhucnd
**Store:** Apple App Store
**Country:** Южно-Африканская Республика
**Version:** 1.9.2 (released 2026-09-19)
**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/za/app/app/id1673640297)
**AppTail Page:** [https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/south-africa](https://apptail.io/ru/app/scientific-calculator-fx-991-aDTk/south-africa)

## 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 Южно-Африканская Республика
- 5 stars: 274 (84%)
- 4 stars: 35 (11%)
- 3 stars: 3 (1%)
- 2 stars: 7 (2%)
- 1 stars: 9 (3%)

## Scientific Calculator fx-991 Reviews in Южно-Африканская Республика

### ***** "READ"
this is the best scientific calculator for you.
-- reviewer1809, 2023-10-18

### *---- "Too bad"
This app is a disaster, it can’t even open after download 😩🚮
-- Geeigeh, 2023-07-19

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

## Scientific Calculator fx-991 In-App Purchases
| Item | Price |
|------|-------|
| Yearly Premium Access | 99.99 R |
| Monthly Premium Access | 9.99 R |
| 6-Month Premium Membership | 49.99 R |

## Scientific Calculator fx-991 Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Топ бесплатных | Египет | Education | #4 |
| Топ бесплатных | Алжир | Education | #7 |
| Топ бесплатных | Филиппины | Education | #8 |
| Топ бесплатных | Малайзия | Education | #11 |
| Топ бесплатных | Пакистан | Education | #13 |
| Топ бесплатных | Эквадор | Education | #15 |
| Топ бесплатных | Кувейт | Education | #18 |
| Топ бесплатных | Колумбия | Education | #21 |
| Топ бесплатных | Перу | Education | #27 |
| Топ бесплатных | Южно-Африканская Республика | Education | #32 |
| Топ бесплатных | Нигерия | Education | #34 |
| Топ бесплатных | ОАЭ | Education | #35 |
| Топ бесплатных | Аргентина | Education | #46 |
| Топ бесплатных | Ливан | Education | #48 |
| Топ бесплатных | Саудовская Аравия | Education | #51 |
| Топ бесплатных | Мексика | Education | #66 |
| Топ бесплатных | Чили | Education | #66 |
| Топ бесплатных | Вьетнам | Education | #70 |
| Топ бесплатных | Сингапур | Education | #85 |
| Топ бесплатных | Венгрия | Education | #117 |
| Топ бесплатных | Индонезия | Education | #120 |
| Топ бесплатных | Индия | Education | #120 |
| Топ бесплатных | Алжир | Overall | #141 |
| Топ бесплатных | Доминиканская Республика | Education | #146 |
| Топ бесплатных | Египет | Overall | #158 |
| Топ бесплатных | Таиланд | Education | #163 |
| Топ бесплатных | Республика Корея | Education | #165 |
| Топ бесплатных | Израиль | Education | #170 |
| Топ бесплатных | Канада | Education | #182 |
| Топ бесплатных | Австралия | Education | #189 |
| Топ бесплатных | Ирландия | Education | #190 |
| Топ бесплатных | Тайвань | Education | #191 |
| Топ бесплатных | Португалия | Education | #192 |
| Топ бесплатных | Италия | Education | #213 |
| Топ бесплатных | Великобритания | Education | #225 |
| Топ бесплатных | Гонконг (САР) | Education | #229 |
| Топ бесплатных | Франция | Education | #230 |

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

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---

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