# Polynomial Addition — Add and Subtract Polynomials

> Interactive app for practicing polynomial addition and subtraction with step-by-step guidance. (iPhone/iPad app by Esa Helttula.)

- Source: https://appshunter.io/ios/app/polynomial-addition/id554463264 (this page in markdown: same URL + `.md`)
- Developer: [Esa Helttula](https://appshunter.io/developer/339440196)
- Category: Education
- Price: $3.99
- Rating: 3.60/5 from 5 App Store ratings
- Age rating: 4+
- Requires: iOS 12.0 · 3 MB
- Languages: English
- Released: 2012-09-12
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/polynomial-addition/id554463264/reviews.md

## What is Polynomial Addition?

With the Polynomial Addition and Subtraction app you can practice adding and subtracting polynomials with a step-by-step method. And you can get additional help at each step.

The app saves your most recent problems and allows you to play back previously solved problems. You can play back problems step by step or with an animation. You can stop the playback at any time and continue to solve the problem yourself.

The app has several settings that allow you to set the difficulty to suit your needs. You can either pick answers for each step from multiple choices or you can type in the answers yourself. The former method is a great way to start using the app and then later you can start to type in your answers. Eventually you can hide the current subtraction or addition step and solve the problems without any help.

You can have whole number and fraction coefficients and you can control how hard random problems the app generates. And you have complete freedom to set your own problems with up to forth-degree polynomials.

When you type in your answers you can use a custom keyboard that enables you to enter variables and exponents with just one tap. Each keyboard in the app also contains a built-in calculator.

For several types of steps the app contains help balloons that break the steps into even smaller sub steps that help you solve the steps. Just tap the “Help me” button to open a balloon that will guide you to enter the correct answer.

This app is part of the iDevBooks math app series. Other algebra apps in the series include Polynomial Long Division and Polynomial Multiplication.

Other iDevBooks math apps 

iDevBooks math apps have been reviewed and endorsed by Wired.com, IEAR.org, Edudemic.com, Teachers with Apps, and other respected sites and organizations. 

Some of the other 40 iDevBooks math apps are Column Addition, Long Multiplication, Long Division, Column Subtraction, Visual Multiplication Table, Partial Differences Subtraction, Partial Products Multiplication, Partial Sums Addition, Decimal Rounding, etc. 

Feedback and requests for new features 

New ideas to make this app better are welcome. Please visit idevbooks.com to give feedback. 

Privacy 

This app has no ads or in-app purchases and it does not transmit any data during the operation of the app. This app also does not contain any links to other apps or the web.

## Key features

- Step-by-step polynomial addition and subtraction
- Adjustable difficulty settings
- Multiple choice or typed answers
- Problem playback with animation
- Custom keyboard for variables and exponents
- Built-in calculator
- Help balloons for detailed guidance


## Frequently asked questions about Polynomial Addition

### How does Polynomial Addition help me learn?

Polynomial Addition offers a step-by-step method for practicing polynomial addition and subtraction, providing additional help at each stage. You can also review previously solved problems with playback options.

### Can I adjust the difficulty in Polynomial Addition?

Yes, the app features several settings to adjust the difficulty. You can choose between multiple-choice answers or typing your own answers, and eventually hide steps for a greater challenge.

### What types of coefficients does Polynomial Addition support?

Polynomial Addition supports both whole number and fraction coefficients. You can also set custom problems with polynomials up to the fourth degree.

### Does Polynomial Addition have ads?

No, Polynomial Addition does not contain any advertisements. It is a paid app with no ads or in-app purchases.

### What devices is Polynomial Addition available on?

Polynomial Addition is currently supported on iPad devices. It is not available on other platforms like iPhone or Android at this time.

### How often is Polynomial Addition updated?

The latest version of Polynomial Addition is 4.5, last updated on November 12, 2021. Updates typically focus on improvements and new features based on user feedback.

### What is the price of Polynomial Addition?

Polynomial Addition is a paid application priced at $3.99. There are no in-app purchases or subscription fees associated with the app.

### Is Polynomial Addition suitable for younger learners?

With an age rating of 4+, Polynomial Addition is designed to be accessible. Its step-by-step guidance and adjustable difficulty make it suitable for learners of various levels.

## Version history (last 5 releases)

### 4.5 — 2021-11-12

- support for iOS 15

### 4.1 — 2019-12-17

The app is now compatible with iOS 10, 11, and 12, in addition to iOS 13.

### 4.0 — 2019-12-07

- support for iOS 13
- new interface with support for latest iPad models

### 3.0 — 2016-04-04

- support for iOS 9.3
- when selecting the method for solving each step, the "Type in answers" option did not always work
- sometimes the app did not detect that the iPad was rotated into landscape orientation
- minor interface updates 
- new icon

Please visit iDevBooks.com if you have any feedback or you want information about 26 iDevBooks math apps.

### 1.1 — 2013-11-25

- When selecting the method for solving each step, the "Type in answers" option did not always work.
- Sometimes the app did not detect that the iPad was rotated into landscape orientation.
- Interface updates for iOS 7. 

If you have any feedback please visit idevbooks.com. There are now 24 iDevBooks math apps.

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## More apps by Esa Helttula

- [Column Addition](https://appshunter.io/ios/app/column-addition/id339440193)
- [Column Subtraction](https://appshunter.io/ios/app/column-subtraction/id341040894)
- [Long Division](https://appshunter.io/ios/app/long-division/id341041204)
- [Long Multiplication](https://appshunter.io/ios/app/long-multiplication/id345037369)
- [Partial Sums Addition](https://appshunter.io/ios/app/partial-sums-addition/id351022022)
- [Trade-First Subtraction](https://appshunter.io/ios/app/trade-first-subtraction/id351022585)

All apps by Esa Helttula: https://appshunter.io/developer/339440196

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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 2026-06-10.*