# Addition Concentrated

> Addition practice app for single to five-digit numbers with multiple choice or column methods. (iPhone/iPad app by Catherine Vitti.)

- Source: https://appshunter.io/ios/app/addition-concentrated/id548958374 (this page in markdown: same URL + `.md`)
- Developer: [Catherine Vitti](https://appshunter.io/developer/548958377)
- Category: Education, Games
- Price: $0.99
- Rating: 5.00/5 from 2 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 2 MB
- Languages: American English
- Released: 2012-08-07
- Data updated: 2026-08-06
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/addition-concentrated/id548958374/reviews.md

## What is Addition Concentrated?

Solve addition problems of one-digit to five-digit numerals, either in the traditional right-to-left, column-by-column method; or in multiple choice mode, to select the answer from four choices.

Eight background color choices including white-on-black and black-on-white, for users with mild visual impairment.

Perfect for use with a classroom iPad.  Numerals, as displayed on the iPad, are large enough to be seen at a distance, so it's great for a group demonstration or a challenge between teams.

## Key features

- Addition practice
- Single to five-digit numerals
- Column-by-column method
- Multiple choice mode
- Customizable background colors
- Large numeral display

## Chart rankings

- #162 in Top Paid · Education (US App Store)

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/addition-concentrated/id548958374/reviews.md

### 5/5 — Very helpful

*2012-08-18*

I love that the app will last a long time since you can set the difficulty of the addition problem.  A handy app to have for all ages...good learning tool.....great addition tool.

### 5/5 — Awesome!

*2012-08-14*

Wish I had this type of app when I was in school. Math concepts were hard for me and a practice app like this would have been great. This is perfect because it can be set for different levels and you can even customize the color scheme.

## Frequently asked questions about Addition Concentrated

### What addition methods does Addition Concentrated offer?

Addition Concentrated allows users to solve addition problems using the traditional right-to-left, column-by-column method or by selecting the correct answer from four choices in multiple choice mode.

### Can Addition Concentrated be used by people with visual impairments?

Yes, Addition Concentrated includes eight background color choices, including white-on-black and black-on-white, to assist users with mild visual impairments.

### Is Addition Concentrated suitable for classroom use?

Yes, the app is perfect for classroom iPads. The large numerals displayed are easily visible from a distance, making it ideal for group demonstrations or team challenges.

### What devices does Addition Concentrated support?

Addition Concentrated is available on iPhone, iPad, and iPod devices.

### How often is Addition Concentrated updated?

The latest version is 4.3.1, and it was last updated on February 7, 2026. This indicates a commitment to ongoing development and improvements.

### What is the age rating for Addition Concentrated?

Addition Concentrated has an age rating of 4+, making it suitable for young learners and children.

### What is the price of Addition Concentrated?

Addition Concentrated is a paid app, priced at $0.99.

### Does Addition Concentrated have ads?

No, Addition Concentrated does not contain advertisements.

## Version history (last 5 releases)

### 4.3.1 — 2026-02-07

Minor layout changes.

### 4.2.1 — 2021-12-21

Minor layout adjustment.  Additional background colors.

### 4.0.4 — 2020-12-06

Updated for iOS 14.  Minor layout adjustments.

### 3.0.2 — 2019-11-27

Updated for iOS 13

### 2.0.4 — 2016-10-08

Updated for iOS 10

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## More apps by Catherine Vitti

- [Subtraction Concentrated](https://appshunter.io/ios/app/subtraction-concentrated/id880312807)
- [Fraction-O-Meter](https://appshunter.io/ios/app/fraction-o-meter/id914099276)

All apps by Catherine Vitti: https://appshunter.io/developer/548958377

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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 2026-08-06.*