# n-back

> Brain training app to improve working memory through n-back exercises. (iPhone/iPad app by Asato Imai.)

- Source: https://appshunter.io/ios/app/n-back/id551544969 (this page in markdown: same URL + `.md`)
- Developer: [Asato Imai](https://appshunter.io/developer/288699111)
- Category: Education, Games, Action
- Price: Free
- Rating: 3.00/5 from 44 App Store ratings · 71 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 5 MB
- Languages: American English, Japanese
- Released: 2012-10-01
- Data updated: 2026-06-08
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/n-back/id551544969/reviews.md

## What is n?

Good brain trainer app for improving your working memory.

＜ USAGE ＞
1. Select  level (1-10).
2. Memorize the answer of easy addition for the level times.
3. Continue memorizing and tap the last digit of the answer of n times before (NOT current answer).

If you don't know what is N-Back, please see below.
http://en.wikipedia.org/wiki/N-back

## Key features

- Working memory training
- Adjustable difficulty levels (1-10)
- Memorization of addition problem digits
- Tap last digit of previous answers
- N-back exercise implementation

## Recent user reviews (10 of 71)

All indexed reviews: https://appshunter.io/ios/app/n-back/id551544969/reviews.md

### 1/5 — Trash

*2025-06-24, version 1.3.2*

Trash app, lot of ads

### 1/5 — Ad after ad after ad

*2025-04-25, version 1.3.2*

This app has too many ads that gone on far too long to bother with. You play a round and then you have to sit through a stupid ad before you can play another round. You spend more time looking at ads than playing the n-back game. I deleted this app about eight years ago because of this. I had forgotten about the waste-of-my-time ads. Don't waste your time with this app.

### 1/5 — Ad after ad after ad

*2025-03-03, version 1.3.2*

This app has too many ads that gone on far too long to bother with. You play a round and then you have to sit through a stupid ad that before you can play another round. You spend more time looking at ads than playing the n-back game. I deleted this app about eight years ago because of this. I had forgotten about the waste-of-my-time ads. Don't waste your time with this app.

### 5/5 — IT WORKS

*2025-02-13, version 1.3.2*

Playing this has improved my memory and fluid intelligence. It helps me with many things including being able to keep my track of thoughts. My ability to remember what a person said while still listening to them and being able to reply to what they said prior  in the conversation as well as currently so I don’t have to try so hard not to forget key points in the conversation that I want to discuss further. You should do it 15-20 minutes a day. There is not a doubt in my mind that I am cognitively performing in many aspects at a higher level than before. Consistency is key. It might seem hard at first and the ads pop up too often but none the less, N-back works. Thorough studies have been done that show similar results between single N-back and dual N-back. The only thing about this app is there are too many ads, but it’s worth the setback.

### 5/5 — Too many ads

*2025-01-25, version 1.3.2*

Stop with ads after every game
I play 3 back often and it lasts 4 seconds and then there is an ad after each game.
My name is MikeMcFarland81 and I’m ranked very high on the level 
3-back but because I’m so fast I see ads every few seconds literally.

### 1/5 — 非常差劲

*2024-03-15, version 1.3.2*

里面的功能根本没法用，估计就是为了赚广告费

### 5/5 — Мне нравится

*2023-05-18, version 1.3.2*

Гениально! Но почему-то  11 равно 1

### 2/5 — Why so many ads?

*2022-07-22, version 1.3.2*

Great app but so many ads and no option to remove. I would pay a couple bucks for an ad-free option.

### 2/5 — Too many ads

*2022-07-18, version 1.3.2*

I know there is an option to buy and lose the ads but the free version has an ad running about every twenty seconds. I’d upgrade but none of the buttons, menu items, options etc are complete words on my screen because I wear glasses and have my font set a little higher. Additionally I had my NB set to 1 and even though I remembered 1 back each time it still marked me as incorrect. A bettter version would have held my attention, so to speak. None the less the concept is solid. Would have been 3 stars for app formatting that doesn’t fit screen but the ads sunk it. Any app that spends up to half the usage time running you ads ruins the user experience.

### 3/5 — Ads after every fail every few seconds. Distracting.

*2022-04-19, version 1.3.2*

It’s difficult to train the brain with long adds you have to wait for every few seconds. Maybe provide a paid version for $1 without the ads because this is madness.

## Frequently asked questions about n

### What is the n-back app?

This app is a brain trainer designed to improve your working memory. It utilizes the n-back task, where you need to recall information presented previously in a sequence.

### How does the n-back app work?

You select a difficulty level from 1 to 10. The app presents addition problems, and your task is to memorize the last digit of the answer from 'n' steps prior, not the current answer.

### What are the benefits of using this app?

The primary benefit is the improvement of your working memory. Consistent use can help you better retain and process information, which is crucial for learning and daily tasks.

### Is the n-back app free to use?

Yes, the app is free to download and use. However, it does contain advertisements to support its development and maintenance.

### What is working memory?

Working memory is a cognitive system responsible for temporarily storing and manipulating information needed for complex cognitive tasks such as learning, reasoning, and comprehension. This app specifically targets its enhancement.

## Version history (last 5 releases)

### 1.3.2 — 2021-09-08

maintenance update

### 1.3.1 — 2021-09-07

maintenance update

### 1.3 — 2020-05-01

- now dark mode aware

### 1.2.1 — 2018-08-16

- maintenance update

### 1.2 — 2017-03-25

- Now user can select whether use Vibrating and Screen Flashing or not.
- Now score will be registered to Game Center when game is cleared without mistake only
- Leaderboards are separated from older version.

## Apps similar to n

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Brain Sharp:  Brain Training](https://appshunter.io/ios/app/brain-sharp-brain-training/id1498294537) | 4.6 (24) | Free | Education |
| [N'Back](https://appshunter.io/ios/app/nback/id591320567) | 4.0 (3) | Free | Education |
| [NBack³: Memory Training Game](https://appshunter.io/ios/app/nback-memory-training-game/id6745750227) | — | Free | Education |
| [Mind Games Pro](https://appshunter.io/ios/app/mind-games-pro/id792581005) | 4.7 (1,924) | $4.99 | Education |
| [N-Back Challenge](https://appshunter.io/ios/app/n-back-challenge/id1524599079) | 4.7 (192) | Free | Education |
| [NBack for iPad Lite](https://appshunter.io/ios/app/nback-for-ipad-lite/id506570446) | 4.3 (3) | Free | Education |

## More apps by Asato Imai

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All apps by Asato Imai: https://appshunter.io/developer/288699111

## Related topics

[n back](https://appshunter.io/ios/topics/n-back)

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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 2026-06-08.*