THIS IS A SERIOUS GAME. It will improve your working memory and helps you solve problems faster. It's also fun but not in the way you would expect. Reaching new levels in the game is incredibly satisfying.

An optional premium upgrade is available through a one-time in-app purchase that will remove ads and enable iCloud synchronization across multiple devices.

To get bugs fixed as fast as possible, please use the FEEDBACK button in the game's CREDITS screen.


“I hate it...BUT I LOVE IT. The first time I played, I felt like I was learning to walk. It was awkward and I made a lot of mistakes. But then it slowly started to make more sense and suddenly I saw the utility in the app. It's hard but hard is good. Train your brain. Get this app..."

“Easily playable and understandable interface"

“Muy buen juego para incrementar tu memoria y tu coeficiente intelectual."

Dual N-Back exercise is a scientifically proven way of improving your fluid intelligence. Fluid intelligence refers to the ability to reason and to solve new problems independently of previously acquired knowledge. More information about the science from the support page.

- Simple but challenging gameplay
- Graphical statistics with daily progress and trend line
- Helpful gameplay animations and tips explaining all you need to know about dual N-back

The idea is to remember sequentially spoken letters and positions of a square. The sequence length is increased or lowered for the next round depending how well you are doing.

You will advance to your current top performance level quite fast and it takes some persistence to get to the next level. On the other hand, the length of the sequence (i.e. difficult level) for each round is deliberately changed quite easily so that there is minimal change to develop automatic processes and task-specific strategies which are actually not increasing your fluid intelligence in the long run.

What’s New

Version 2.5.2

- Dark mode
- Cosmetic changes
- Bug fixes

Ratings and Reviews

3.4 out of 5
75 Ratings

75 Ratings

JMJ1917 ,

Love concept but has constant accuracy errors

I love to utilize this app in my cognitive therapy pts; however I find that the accuracy provided in the app is always incorrect.
If I knew that this app would provide more accuracy for my pts I would utilize it more for them to complete home practice.
So basically I cannot recommend this app with its current inaccuracies.

Developer Response ,

Could you elaborate on this by sending feedback via the customer feedback button from the help sections of the app please. It is not clear from your review how the app is inaccurate.

Mangooner ,

Please add entire alphabet

Would love to support and pay for premium. Only improvement holding me back is the lack of certain letters. Please add the entire alphabet and will go premium.

Other less vital improvement suggestions. Would pay for these features.
- Option to adjust the daily completion goal to be less than 20
- Add a calendar to check off completions each day, this helps to motivate habit

JQ the cub ,

The only good free dual n-back app

There appear to a number of paid dual n-back apps out there, but this is the only one I've found that is solely ad-supported. It's minimal, doesn't let you change sound sets or do any other customization but it's free! And it works great. Totally solid!
I would love the ability to change sound sets though, as a musician I'd like to be able to use notes of the scale instead of letters.


Mikko Tyrskeranta
114.5 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
In-App Purchases
  1. Premium (one-time purchase) $3.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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