# Dual N-Back: Brain Training — Backed by science > Scientifically proven brain training exercise to boost working memory and fluid intelligence. (iPhone/iPad app by Lindware OU.) - Source: https://appshunter.io/ios/app/dual-n-back-brain-training/id1099572886 (this page in markdown: same URL + `.md`) - Developer: [Lindware OU](https://appshunter.io/developer/510283189) - Category: Health & Fitness, Games, Puzzle - Price: Free with in-app purchases - Rating: 4.10/5 from 86 App Store ratings · 44 written reviews indexed - Age rating: 4+ - Requires: iOS 9.0 · 42 MB - Languages: American English, Russian - Released: 2016-04-08 - Data updated: 2026-08-29 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/dual-n-back-brain-training/id1099572886/reviews.md ## What is Dual N? Scientific evidence shows this exercise can significantly boost your working memory. Working memory is a memory buffer of your brain, responsible for holding and manipulation of information. Multiple studies suggest that improving brain's working memory increases fluid intelligence. Dual N-Back is the same exact exercise performed by test subjects during experiments. The app mimics the rules and mechanics of original experiments as close as possible giving you at the same time: - Competitive features (Game Center and leaderboards) - Configurable reminders to help you stay on track - Extensive statistics to analyze your progress Also, the app requires no internet connection for the most of its features. ## Key features - Working memory enhancement - Fluid intelligence improvement - Replicates original experiment - Competitive leaderboards - Configurable reminders - Extensive statistics ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Remove Ads | $1.99 | one-time | ## Recent user reviews (10 of 44) All indexed reviews: https://appshunter.io/ios/app/dual-n-back-brain-training/id1099572886/reviews.md ### 5/5 — I had to leave a review *2024-10-02, version 1.3.2* This is a way of life, and if you take it seriously, it can improve your memory. I didn’t realize some people were upset that it doesn’t have a grid, but it didn’t bother me. In fact, I found out that people said it to be more challenging without one, which I think is a good thing. Overall, this app is something I plan to use for the rest of my life. ### 3/5 — Scoring doesn’t make sense *2024-08-20, version 1.3.2* If I never submit an answer I automatically get 70%? I just want to see how many I missed vs how many were possible. Percentage of success in the scoring is vague and doesn’t make sense since apparently if I don’t hit the buttons when there isn’t a match that’s correct too? Maybe add a feature to pick how you want to be scored. One for the current way and another for showing how many matches were possible vs how many you hit and then how many errors you made. ### 2/5 — English Version *2022-12-06, version 1.3.2* Is there a version that uses Zed as opposed to Zee. ### 5/5 — The only N-Back app that I like *2022-11-02, version 1.3.2* Really great, simple Dual N-Back app I’ve found that is well-made, nice looking, and functional. And I’ve tried every single one with 3+ stars. Unlike another reviewer, I like the grid-less layout — an extra challenge. The ads on the free version are not obtrusive at all but I still paid $1.99 to support the developer. ### 5/5 — Currently my favourite app *2022-09-04, version 1.3.2* This is currently my favourite app! I’ve been practising several times every day. Thank you for a clear, neat experience of N-back, better presented than the other ones (I went and tried most of them). If there was Tri-back or Quad-back options available it would be even better. ### 5/5 — Difficult without the Grid *2022-02-27, version 1.3.2* Lean into the difficulty. I like that it doesn’t have a grid. It didn’t in the beginning like more other reviewers. However, after playing it a while, it makes you even better at the game. It challenges your brain more, and that’s the point. So lean into the difficulty. I’ve only made it to N9, currently stuck on 7/8, but motivated to go further. I can literally feel my brain working. This has to be good for you. I also feel I have some clairvoyance from time to time. ### 4/5 — Grid! *2021-11-27, version 1.3.2* It’s a great app but at the very least, there should be an option to turn the grid on or off. I’m just starting out and not having a grid for me is distracting and makes it tougher to memorize. ### 2/5 — Position and Sound Buttons come up too late. *2021-01-27, version 1.3.2* I have good things from Mr. Greenfield of Boundless fame. The game is touted as something that improves cognition and memory; however, it is only “improving” my exasperation with the sound and locations buttons not coming up simultaneously to the game beginning. I would stay away until this glitch is resolved and stick to the other N-back games. They seem to not have this glitch about them and are quite challenging. ### 4/5 — Good app for concentration *2020-12-28, version 1.3.2* I can’t tell you whether my IQ is actually improving, but this is a great way to start a workday or study session. Do 10-20 of these and you are laser-focused and ready to perform. Just a recommendation for the app developer to do some spell-checking. E.g make sure the word “exercise” is spelled correctly. Little things like that detract from what is otherwise a really well-made app. ### 5/5 — Need option to swap button *2020-09-05, version 1.3.2* Great app ! Hope to have option to swap two button ## Frequently asked questions about Dual N ### What is Dual N-Back? Dual N-Back is a scientifically validated cognitive exercise designed to improve working memory. It involves simultaneously tracking auditory and visual stimuli and remembering if the current stimulus matches one from 'n' steps back. This app replicates the exact mechanics of the original experiments. ### How does this app improve my brain? Multiple studies suggest that improving working memory, which this app directly targets, can significantly increase fluid intelligence. Fluid intelligence is your ability to reason and solve new problems independently of previously acquired knowledge. By consistently practicing the Dual N-Back exercise, you can enhance these cognitive functions. ### Is this app free to use? The app is free to download and use with its core functionalities. However, it offers in-app purchases, which may unlock additional features or content to further enhance your training experience. ### Does the app require an internet connection? No, the app does not require an internet connection for most of its features. This allows you to train your brain anytime, anywhere, without worrying about connectivity issues. Only competitive features like Game Center and leaderboards require an internet connection. ### What kind of progress tracking is available? The app provides extensive statistics to help you analyze your progress over time. You can monitor your performance, identify areas for improvement, and track your journey towards enhanced working memory and fluid intelligence. ## Version history (last 5 releases) ### 1.3.2 — 2020-04-23 Less distracting click sound, stability improvements ### 1.3.1 — 2019-11-09 ◦ Long-awaited support for training in silent mode. For pronouncing letters we dropped the system speech synthesizer with all its weirdness and replaced it with a good old collection of audio clips ◦ Better and consistently sounding letters across all regions and locales ◦ Haptic feedback during brain workouts ◦ iOS 13 styled UI with the support of interactive swipe-to-dismiss and much more ◦ The background is darker now to be less distracting ### 1.3 — 2017-11-26 Brain workout reminders Dual N-Back is proved to be working only if used consistently. With this release, it has become easy to stay on track — just enable daily reminders in settings. ### 1.2 — 2016-12-13 Game Center support has arrived. Compete with friends and other N-Backers around the globe! Use in-game achievements as milestones of your progress. ### 1.1.2 — 2016-06-29 In-app purchase validation issue fixed, please restore your purchase if ads failed to be removed. Dear customers who have shown you support for the app by removing the ads during June and have not had the ads removed, please go to app settings and press "Restore Purchase" to resolve the issue. It was a sad surprise for me that code responsible for fraud detection has been working incorrectly since recent changes in App Store receipt formats. Please, accept my apologies for ruining your experience. ## Apps similar to Dual N | App | Rating | Price | Category | | --- | --- | --- | --- | | [Lazy Eye Bubble Shooter](https://appshunter.io/ios/app/lazy-eye-bubble-shooter/id975380960) | 1.0 (1) | $27.99 | Health & Fitness | | [SETKA: digital vitamin](https://appshunter.io/ios/app/setka-digital-vitamin/id1553300836) | 4.6 (10) | Free | Health & Fitness | | [Breathing: Breathe & Meditate](https://appshunter.io/ios/app/breathing-breathe-and-meditate/id1584407465) | 5.0 (34) | Free | Health & Fitness | | [neurally -brain based training](https://appshunter.io/ios/app/neurally-brain-based-training/id1641704977) | 5.0 (1) | Free | Health & Fitness | | [Breathe With Me: breathwork](https://appshunter.io/ios/app/breathe-with-me-breathwork/id1610009500) | 4.9 (21) | Free | Health & Fitness | | [Memory Skill Elevator](https://appshunter.io/ios/app/memory-skill-elevator/id1445198120) | 4.6 (305) | Free | Health & Fitness | ## Related topics [dual n back training](https://appshunter.io/ios/topics/dual-n-back-training) · [dual n back brain game](https://appshunter.io/ios/topics/dual-n-back-brain-game) · [n back](https://appshunter.io/ios/topics/n-back) · [dual and back](https://appshunter.io/ios/topics/dual-and-back) · [chalk performance training](https://appshunter.io/ios/topics/chalk-performance-training) · [dual and back training](https://appshunter.io/ios/topics/dual-and-back-training) · [neurofit training](https://appshunter.io/ios/topics/neurofit-training) · [dual n back](https://appshunter.io/ios/topics/dual-n-back) --- *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 2026-08-29.*