# Equation Solver 4in1 — Advanced equation calculator

> Advanced calculator for solving linear, quadratic, cubic, and quartic equations. (iPhone/iPad app by Intemodino Group s.r.o..)

- Source: https://appshunter.io/ios/app/equation-solver-4in1/id575826804 (this page in markdown: same URL + `.md`)
- Developer: [Intemodino Group s.r.o.](https://appshunter.io/developer/557849644)
- Category: Education, Utilities
- Price: $5.99 (on sale, was $9.99)
- Age rating: 4+
- Requires: iOS 12.0 · 13 MB
- Languages: American English, Czech, Danish, Dutch, French (France), German (Germany), Italian, Japanese, Korean, Norwegian Bokmål and 8 more
- Released: 2012-11-11
- Data updated: 2026-08-29
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/equation-solver-4in1/id575826804/reviews.md

## What is Equation Solver 4in1?

Equation Solver is the ultimate app that helps you solve linear equations in one variable, quadratic equations with real and complex roots, cubic and quartic equations. It's intuitive and easy to use. Just type in any equation you want to solve and Equation Solver will show you the result. 

Everything you need to solve equations or check results! 

Features:

• Linear Equation Solver.
• Quadratic Equation Solver.
• Cubic Equation Solver.
• Quartic Equation Solver.
• Solves equations with fractions and parentheses. Note: the app doesn’t yet support equations with a variable in the denominator.
• Supports integers, fractions and decimals, including negative values.
• Detailed step-by-step instructions for linear equations and quadratic equations.
• Stores history with the possibility to recall previous equations.
• Back and forward buttons to check and recall recent equations.
• Sends results and history via email.

## Key features

- Linear equation solver
- Quadratic equation solver
- Cubic equation solver
- Quartic equation solver
- Step-by-step solutions
- Equation history

## Recent user reviews (10 of 29)

All indexed reviews: https://appshunter.io/ios/app/equation-solver-4in1/id575826804/reviews.md

### 1/5 — 乱扣费呢

*2024-09-21*

就打开看了一眼 根本没有订阅 打开账单一看扣了48 天都塌了

### 1/5 — Avoid like the plague

*2020-11-22*

This app and the one they sell with it are utter rubbish, complete waste of money

### 1/5 — Yanlışlıkla indirdim

*2020-11-13, version 4.1.5*

Hiçbir işe yaramıyor. Yanlışlıkla indirmişken deneyeyim dedim ama bir bilinmeyenli bir denklemi bile çözemiyor hatta denklemi yazamıysunuz bile.

### 1/5 — 환불 해주세요

*2020-07-04*

너무 어려워서 사용을 못하겠어요

### 1/5 — 忽悠

*2018-08-20*

不是说有中文版的吗？怎么没有

**Developer response:** 该应用程序支持18种语言，包括中文。 在4.0.3版本中，我们在某些设备上修复了自动语言检测的问题。 您也可以通过点击设置（位于左上角）并从语言列表中选择中文来切换到中文。 要选择中文，您应向下滚动到语言列表的底部。如果您有任何其他问题，请通过https://intemodino.com/en/contact-us.html与我们的支持团队联系。 The app supports 18 languages, including Chinese language. In version 4.0.3, we fixed the problem with the Chinese language auto-detection on some devices. You can also switch to Chinese by tapping Settings (in the top left corner) and selecting Chinese from the list of languages. To select Chinese, you should scroll down to the bottom of the Language list. As the app supports 18 languages, due to the screen size not all language are visible. The Chinese language is at the end of the list, so just scroll the list down. If you have any further questions, please contact our support team at https://intemodino.com/en/contact-us.html.

### 1/5 — Horrible

*2016-11-08*

If I could give it negative stars, I would. Every calculator is the exact same and could barely calculate 1+1

**Developer response:** We are very sorry to hear that the app does not work for you. If you have any suggestions about the app, please contact our support team at https://intemodino.com/en/contact-us.html.

### 2/5 — Under-equipped

*2016-05-24*

Very disappointed. This calculator doesn't have a negative key. What kind of calculator can't calculate negatives?!

### 1/5 — App does solve anything...literally

*2015-10-06*

Normally you would use a calculator to get the answer.  Well this one makes you give the answer.  Not sure what they were going for here, but wasn't this wasn't helpful at all

### 5/5 — Excelente app

*2015-04-10, version 3.0.0*

Muy bien 100% recomendada 👌🏾

### 1/5 — <> Yok aptallar

*2015-02-26, version 3.0.0*

yapacağınız programa koyim büyük küçük denklemleri yok allah belanızı versin😅

## Frequently asked questions about Equation Solver 4in1

### What types of equations can Equation Solver 4in1 solve?

Equation Solver 4in1 can solve linear equations in one variable, quadratic equations with real and complex roots, cubic equations, and quartic equations. It also handles equations with fractions and parentheses.

### Does Equation Solver 4in1 offer step-by-step solutions?

Yes, Equation Solver 4in1 provides detailed step-by-step instructions for solving linear and quadratic equations. This feature helps users understand the process of finding the solution.

### Can I save my previous calculations with Equation Solver 4in1?

Equation Solver 4in1 features a history function that stores your previous equations. You can recall and review past calculations using the back and forward buttons.

### What is the price of Equation Solver 4in1?

Equation Solver 4in1 is a paid app priced at $5.99. This one-time purchase grants access to all its equation-solving features.

### On which devices can I use Equation Solver 4in1?

Equation Solver 4in1 is available on Mac, iPhone, iPad, and iPod. Its compatibility across Apple devices ensures broad accessibility for users.

### How often is Equation Solver 4in1 updated?

The app was last updated on March 1, 2024, with version 4.6.0. This indicates regular updates to maintain functionality and potentially add new features.

### Can I share my results from Equation Solver 4in1?

Yes, Equation Solver 4in1 allows you to send your results and calculation history via email. This is useful for sharing solutions or documenting work.

### What is the age rating for Equation Solver 4in1?

Equation Solver 4in1 has an age rating of 4+. This suggests it is suitable for a wide range of users, including younger students learning algebra.

## Version history (last 5 releases)

### 4.6.0 — 2024-03-01

- Updated design.
- Now you can easily round both decimal and fractional results. For decimals you can specify the desired number of decimal places after a decimal point. Fractions can be rounded to the nearest fraction of a specified denominator.
- From version 4.5.0 onwards, you can choose an output format to display results: "auto", "decimal", "fraction" or "decimal and fraction" 
- Added the Square root button.
- Updated the engine for equations solving.
- Updated apps' icon.

### 4.1.5 — 2020-02-10

Added Czech and Polish localizations.
Updated interface for iPhone XR.

### 4.0.3 — 2018-08-24

Fixed problem with Chinese language auto-detection.

### 4.0.2 — 2018-04-27

New interface.
Now you can solve linear, quadratic, cubic and quartic equations, including equations containing fractions and parentheses.
New app icon.

### 3.0.2 — 2015-09-11

General improvements.

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## More apps by Intemodino Group s.r.o.

- [Systems of equations solver](https://appshunter.io/ios/app/systems-of-equations-solver/id566425829)
- [Random Number Generator RNG](https://appshunter.io/ios/app/random-number-generator-rng/id570657392)
- [GCD and LCM](https://appshunter.io/ios/app/gcd-and-lcm/id603026694)
- [Fraction Calculator 4in1](https://appshunter.io/ios/app/fraction-calculator-4in1/id638829648)
- [Fractions Pro](https://appshunter.io/ios/app/fractions-pro/id756595886)

All apps by Intemodino Group s.r.o.: https://appshunter.io/developer/557849644

## Related topics

[equation solver 4in1](https://appshunter.io/ios/topics/equation-solver-4in1) · [equation solver](https://appshunter.io/ios/topics/equation-solver) · [linear regression equation](https://appshunter.io/ios/topics/linear-regression-equation)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*