# Dual N-Back - Train of Thought

> App for improving fluid intelligence using the Dual N-Back cognitive training method. (iPhone/iPad app by Michal Mandrysz.)

- Source: https://appshunter.io/ios/app/dual-n-back-train-of-thought/id1105386111 (this page in markdown: same URL + `.md`)
- Developer: [Michal Mandrysz](https://appshunter.io/developer/454758944)
- Category: Education, Games, Puzzle
- Price: $2.99
- Rating: 4.00/5 from 2 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.0 · 59 MB
- Languages: American English
- Released: 2016-04-26
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/dual-n-back-train-of-thought/id1105386111/reviews.md

## What is Dual N?

Dual N-Back is the most popular app for improving fluid intelligence.
This is a simple, bare bone, implementation of this idea.

Cloud service for storing your settings and progress.
Now you can stay in sync in between your iOS and MacOS devices!

More features coming soon!

## Key features

- Fluid intelligence improvement
- Dual N-Back task implementation
- Cloud sync for settings and progress
- Cross-device synchronization (iOS/macOS)

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/dual-n-back-train-of-thought/id1105386111/reviews.md

### 3/5 — Good start

*2017-04-16, version 1.4.0*

As advertised, this is just the basic game. The UI needs some refinement and there should be a pause between rounds. I'm anxiously waiting for stats and sync between devices.

**Developer response:** I'm happy to say that the Cloud is almost ready!
We're just running some final tests and should be ready within a week or so now.

## Frequently asked questions about Dual N

### What is Dual N-Back used for?

Dual N-Back is used to improve fluid intelligence, which is the ability to solve new problems and reason abstractly. It is a scientifically recognized method for cognitive enhancement.

### How does Dual N-Back work?

The app implements the Dual N-Back task, where users must remember and match both the position and the sound of stimuli presented N steps back in a sequence. This dual-tasking challenges working memory and processing speed.

### Can I use Dual N-Back on multiple devices?

Yes, Dual N-Back offers a cloud service to store your settings and progress, allowing you to stay in sync between your iOS and macOS devices.

### What is the price of Dual N-Back?

Dual N-Back is a paid app, available for $2.99. There are no in-app purchases or subscriptions mentioned.

### Is Dual N-Back suitable for children?

The app has an age rating of 4+, making it suitable for a wide range of users. Its cognitive training nature can benefit learners of various ages.

### How often is Dual N-Back updated?

The latest version, 1.11.6, was released on February 23, 2021. While updates are not frequent, the core functionality remains stable for cognitive training.

### Does Dual N-Back have ads?

No, Dual N-Back is ad-free. As a paid application, it provides an uninterrupted cognitive training experience without advertisements.

### What devices support Dual N-Back?

Dual N-Back is supported on Apple TV, iPhone, iPad, and iPod devices. This broad compatibility allows users to train their cognition on various Apple platforms.

## Version history (last 5 releases)

### 1.11.6 — 2021-02-23

Fixes and improvement for iOS 14.

### 1.11.5 — 2021-02-22

Fixes and improvement for iOS 14.

### 1.10.2 — 2018-11-20

Mini tutorial included

### 1.10.1 — 2018-10-18

Fixed problem with progress sync

### 1.9.2 — 2018-09-06

- New indicators of correct/wrong questions
- Improved menu's

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## More apps by Michal Mandrysz

- [True Sentence](https://appshunter.io/ios/app/true-sentence/id1038945285)
- [Digit Span - Train of Thought](https://appshunter.io/ios/app/digit-span-train-of-thought/id1179546784)
- [Mental Rotation - ToT](https://appshunter.io/ios/app/mental-rotation-tot/id1187217850)
- [Stroop Effect - ToT](https://appshunter.io/ios/app/stroop-effect-tot/id1443395928)

All apps by Michal Mandrysz: https://appshunter.io/developer/454758944

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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.*