# Dual N-Back ADHD Focus Game — Memory & focus training game

> Scientifically proven brain training app for memory, focus, and cognitive enhancement. (iPhone/iPad app by Hiromi Fujita.)

- Source: https://appshunter.io/ios/app/dual-n-back-adhd-focus-game/id1568448504 (this page in markdown: same URL + `.md`)
- Developer: [Hiromi Fujita](https://appshunter.io/developer/1364801021)
- Category: Education, Games, Puzzle
- Price: Free with in-app purchases
- Rating: 4.30/5 from 19 App Store ratings · 24 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.0 · 32 MB
- Languages: American English, Czech, Danish, Dutch, Finnish, French (France), German (Germany), Greek, Hungarian, Indonesian and 14 more
- Released: 2021-06-03
- Data updated: 2026-08-16
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/dual-n-back-adhd-focus-game/id1568448504/reviews.md

## What is Dual N?

■ What is Dual N-Back  
Dual N-Back is a scientifically proven brain training app that strengthens your working memory, concentration, and cognitive abilities.  
With consistent training, it helps improve your IQ, memory, and thinking speed.

---

■ Basic Rules  
The rules of Dual N-Back are simple, yet your brain works harder the more you play.  

* Remember the sequence of positions and letters displayed on the screen.  
* When the current position or letter matches the one shown N steps earlier, press the corresponding button.  
* Each correct answer sharpens your memory and focus — like a workout for your brain.  
* The challenge continues until all lives are lost, testing your concentration and endurance.

---

■ Main Features  
* Difficulty Adjustment: Choose from N-2 to N-5 and train at your own level.  
* Progress Visualization: Track your training volume with graphs and see your improvement through the average correct answers per game.  
* Statistics and Calendar: View summarized stats such as play count, accuracy rate, and average score. Review your progress on a calendar to stay motivated.  
* Global Ranking: Compete with players around the world and challenge the limits of your brain.

---

■ The More You Play, the Stronger Your Brain Becomes  
Just a few minutes a day — on your commute or during a break — can make a real difference.  
Every session helps your brain grow stronger, step by step.  

Take one step today to evolve your mind.

## Key features

- Strengthens working memory
- Improves concentration
- Enhances cognitive abilities
- Difficulty adjustment (N-2 to N-5)
- Progress visualization with graphs
- Statistics and calendar tracking
- Global player rankings

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly Premium Features | $1.99 | per month |
| Annual Premium Features | $19.99 | per year |


## Recent user reviews (10 of 24)

All indexed reviews: https://appshunter.io/ios/app/dual-n-back-adhd-focus-game/id1568448504/reviews.md

### 5/5 — よかったです

*2026-06-27*

よかったです。
カスタマイズできるのもgoodです。

### 1/5 — 何とかしろ

*2026-04-19*

開始早々「えらい 薩摩犬 80」とかいう糞みたいなニックネームをつけられ、変更できない。
実に不快。

### 1/5 — 不正確

*2026-03-24*

正解なのに不正解判定するのはやめて欲しい．人間の記憶力以下。

### 1/5 — Those freaking ads

*2026-01-04, version 4.1.3*

I bought the premium subscription to remove the ads but they’re still showing up! That’s maddening

### 5/5 — 途中でプレイをとめても

*2025-12-01*

記録を残してほしい

### 5/5 — Голос

*2025-11-27, version 4.1.1*

Сделайте пожалуйста, чтоб еще слушать можно было

### 1/5 — 그냥 깔지마세요

*2025-11-26, version 4.1.1*

정기 결제 안하면 기능 싹다 잠겨있는 앱 바로 지웠음

### 5/5 — 脳トレ苦手だけど！

*2025-11-21*

使い始めて数日ですが、デュアルNバックってこんなにハマるのかと驚いてます！早く知りたかったo(^▽^)o笑

他にもアプリは色々ありますが特にデザインがとてもきれいで見やすいのでこちらのアプリにしました。毎日の記録がグラフで見られるのと視覚的に分かりやすい画面がとてもありがたいです。ランキングもいい刺激になるので、もう1回やろう！と思える。

広告もトレーニング終了時だけなので邪魔にならないのですが、有料登録しました^_^笑

こういう脳トレって続かないものも多いけど、これは自然と習慣化できています。これからも脳トレのお供として利用させていただきたいです。

### 4/5 — 可能であれば買い切りにしてほしい

*2025-10-29*

タイトル通りです。買い切りプランを希望

### 1/5 — Bad. Poorly translated and does not behave correctly

*2025-10-09, version 2.1.2*

Bad

## Frequently asked questions about Dual N

### What is Dual N-Back ADHD Focus Game?

Dual N-Back ADHD Focus Game is a brain training application designed to enhance working memory, concentration, and overall cognitive abilities. It utilizes a scientifically proven method where users remember sequences of positions and letters, pressing a button when the current stimulus matches one from N steps prior.

### How does the game help improve focus and memory?

The game works by challenging your brain to constantly track and recall information, acting like a workout for your cognitive functions. Each correct answer sharpens your memory and focus, and consistent play has been shown to improve IQ, memory recall, and thinking speed.

### What are the main features of the app?

Key features include adjustable difficulty levels (N-2 to N-5), progress tracking through graphs and statistics like play count and accuracy, a calendar to review past performance, and a global ranking system to compete with other players.

### Is the app free to download and use?

The application is free to download and offers in-app purchases. While the core gameplay is accessible, users may have options to enhance their experience or unlock additional features through these purchases.

### Who is the target audience for this app?

This app is designed for individuals seeking to improve their mental acuity, including those looking to boost memory, enhance concentration, and develop better cognitive skills. It is particularly beneficial for people experiencing challenges with focus, such as those with ADHD.

## Version history (last 5 releases)

### 4.2.0 — 2026-07-16

- Added an annual plan for Premium features
- Fixed other minor issues
- We will continue improving the app to make it easier to use

### 4.1.8 — 2026-06-14

* Various internal improvements have been made.
* We will continue making improvements to provide an even better user experience.

### 4.1.7 — 2026-04-15

We have fixed minor issues and improved performance.
We have also optimized internal processes and made fine adjustments to ensure a smoother experience.

### 4.1.6 — 2026-04-05

We have fixed minor issues and improved performance.
We have also optimized internal processes and made fine adjustments to ensure a smoother experience.

### 4.1.5 — 2026-03-26

We have fixed minor issues and improved performance.
We have also optimized internal processes and made fine adjustments to ensure a smoother experience.

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## More apps by Hiromi Fujita

- [D-Rec](https://appshunter.io/ios/app/d-rec/id1364801022)
- [DAIMOKU PRO \| Soka gakkai app](https://appshunter.io/ios/app/daimoku-pro-soka-gakkai-app/id1461017357)
- [Simple Diary \| Cute Design](https://appshunter.io/ios/app/simple-diary-cute-design/id1491350708)
- [Memot \| Elegant Memo  App](https://appshunter.io/ios/app/memot-elegant-memo-app/id1492573401)
- [Todie \| Task management](https://appshunter.io/ios/app/todie-task-management/id1493045724)

All apps by Hiromi Fujita: https://appshunter.io/developer/1364801021

## Related topics

[hiromi fujita](https://appshunter.io/ios/topics/hiromi-fujita) · [dual n back training](https://appshunter.io/ios/topics/dual-n-back-training) · [dual and back](https://appshunter.io/ios/topics/dual-and-back) · [dual n back brain game](https://appshunter.io/ios/topics/dual-n-back-brain-game)

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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 2026-08-16.*