# Quadratic Master — Solve quadratic formula

> App for solving and learning quadratic equations, inequations, and functions. (iPhone/iPad app by Lukas Petr.)

- Source: https://appshunter.io/ios/app/quadratic-master/id351899924 (this page in markdown: same URL + `.md`)
- Developer: [Lukas Petr](https://appshunter.io/developer/820384324)
- Category: Education, Reference
- Price: Free with in-app purchases
- Rating: 4.60/5 from 333 App Store ratings · 34 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.0 · 4 MB
- Languages: American English, Czech
- Released: 2010-01-23
- Data updated: 2026-08-27
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/quadratic-master/id351899924/reviews.md

## What is Quadratic Master?

Quadratic Master is the best app for solving and learning quadratic equations, inequations, and functions on your iPhone.

Whether you are a high-school student currently learning about quadratics in your math class or somebody who needs to solve quadratic functions on a regular basis, Quadratic Master is for you.

Main benefits:
• Save time on your math homework
• Learn about quadratics in just a fraction of time
• Share solutions with your classmates.

Free version offers:
• Quadratic equation solver (roots, discriminant, factorization)
• Formulas and guide for manually solving quadratic equations
• Quadratic inequation solver
Quadratic function solver (Vertex form)
3D rotating model of parabola for better understanding of quadratics in geometry

Full version provides:
• Detailed solution for quadratic equations
• Quadratic function solver - general and factored form
• Explanations and formulas for all quadratic function properties
• Quadratic inequation solver with ≥ and ≤ inequality
• Graph mixer - the perfect tool to play with and explore quadratic function graphs
Rapid-fast solving with Single-digit input mode

The full version is available for a small one-time fee.

- - - - - 
I’ve built Quadratic Master back in 2009 when I was in high school and I was learning about quadratic equations in my math class. It is the first app I’ve ever built, and at the risk of sounding cheesy - it still holds a special place in my heart. Even though it was never a significant moneymaker, I’ve kept it updated throughout the years. And I’m happy to say that it has attained over 95.000 downloads to date. If you enjoy using the app, please consider buying the full version. Thank you.
- Lukas Petr, author of Quadratic Master

## Key features

- Quadratic equation solver
- Quadratic inequation solver
- Quadratic function solver
- 3D rotating parabola model
- Graph mixer
- Detailed solution explanations

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Full version | $3.99 | one-time |


## Recent user reviews (10 of 34)

All indexed reviews: https://appshunter.io/ios/app/quadratic-master/id351899924/reviews.md

### 1/5 — Does not work with iOS 26

*2025-12-11*

The input keypad is not complete after updating to iOS 26. That makes the app unusable

**Developer response:** Thank you for letting me know about this. Quadratic Master is now fully updated for iOS 26, including a custom keyboard with the minus sign. Thank you for your patience.
- Lukas

### 5/5 — It does the job!

*2023-11-14*

Simple to use.   Never can remember the quadratic equation.  Now I don’t need to!

### 1/5 — I want a refund

*2021-10-09*

I got this app in the hopes of getting extra help. Sadly all I got was an app that was not working. I can not enter the problem I need help with. Also, it's not showing up in my app library. I know it's not my phone because it's a 12 mini and less than a month old.

### 3/5 — .

*2020-04-25*

wouldn’t let me change addition to subtraction

### 5/5 — Very nice, Caesar-Chan

*2020-03-16*

Nice. No ads. Nice.

### 5/5 — Bad app do not get

*2020-03-04*

Made my cry so I kicked it in the shins

### 5/5 — Helpful

*2019-09-03*

Helped me very much with my homework

### 5/5 — AWESOME!!!

*2018-07-07*

This is a very good app. Very little ads. Very cool. Much fun on my math homework.

### 5/5 — It’s a great app!!

*2017-11-21*

Great app! Quite handy when solving complicated equations.

### 5/5 — Only turned out one mistake!

*2016-10-01*

Seriously saved me when I was super late for class, simple and easy to use. Even lets tells you how to solve on your own~ only mistake was the it flipped the positive and negative of a specific factor so its always good to check your answers!

## Frequently asked questions about Quadratic Master

### What does Quadratic Master do?

Quadratic Master is designed to help users solve and learn about quadratic equations, inequations, and functions. It provides tools for calculating roots, discriminants, factorizations, and understanding function properties. The app aims to simplify complex mathematical concepts and assist with homework or regular problem-solving.

### What are the key features of Quadratic Master?

Key features include solvers for quadratic equations, inequations, and functions in various forms. It offers formulas and guides for manual solving, a 3D rotating model of parabolas for geometric understanding, and a graph mixer to explore function behaviors. The full version provides detailed solutions and explanations for all quadratic function properties.

### How much does Quadratic Master cost?

The app offers a free version with core solving capabilities for quadratic equations and basic functions. A full version is available for a small, one-time fee, which unlocks advanced features like detailed solutions, general and factored form solvers for functions, and enhanced inequality solvers.

### Who is Quadratic Master for?

This app is ideal for high-school students who are currently studying quadratic equations in their math classes. It is also beneficial for anyone who needs to solve quadratic functions on a regular basis, whether for academic purposes or professional applications.

### Can I share solutions with others?

Yes, the app allows you to share solutions with your classmates. This feature can be particularly useful for collaborative learning or when working on group assignments. It helps in disseminating mathematical findings and understanding among peers.

## Version history (last 5 releases)

### 3.4 — 2026-01-08

• Compatibility with iOS 26.
• Fixed a missing minus key on the keyboard on iOS 26.
• Fixed decimal number input for locales that use a comma.
• Fixed an issue where purchase status was sometimes not detected correctly.
• Various small bug fixes and improvements.

### 3.3 — 2021-04-25

• Support for all iPhone 12 models.
• Full compatibility with iOS 14.
• Various small improvements.

### 3.2 — 2018-10-19

Update 3.2 brings compatibility with iOS 12 and support for the new iPhone XS, Xr and XS Max!

We've also made small improvements here and there.

### 3.1.1 — 2018-02-19

Fixed two small layout issues which bubbled up in iOS 11.2:
- line above keyboard kept shrinking in certain scenario
- some subscripts in Detailed solution of quadratic equation were missing

If you enjoy using Quadratic Master, please write a review on the App Store. It really helps!
- Lukas

### 3.1 — 2017-09-17

Update 3.1 brings compatibility with iOS 11 and support for the new iPhone X!

We've also made some small improvements here and there.

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## More apps by Lukas Petr

- [Routie ~ GPS Sports Tracker](https://appshunter.io/ios/app/routie-gps-sports-tracker/id687568871)
- [Timelines Time Tracking](https://appshunter.io/ios/app/timelines-time-tracking/id1112433234)

All apps by Lukas Petr: https://appshunter.io/developer/820384324

## Related topics

[iquadratic](https://appshunter.io/ios/topics/iquadratic) · [quadratic equations to solve](https://appshunter.io/ios/topics/quadratic-equations-to-solve) · [quadratic formula calculator](https://appshunter.io/ios/topics/quadratic-formula-calculator) · [quadratic equations](https://appshunter.io/ios/topics/quadratic-equations) · [factoring quadratics pro](https://appshunter.io/ios/topics/factoring-quadratics-pro) · [equations and inequalities](https://appshunter.io/ios/topics/equations-and-inequalities)

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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 2026-08-27.*