N-Back Challenge 4+

Raise your IQ in 20 days

Rivuspurus OU

    • 4.7 • 3 Ratings
    • Free
    • Offers In-App Purchases

iPhone Screenshots


The N-Back Challenge provides a special type of cognitive training, “dual n-back,” that helps you raise your IQ in just a few minutes per day. Sounds implausible? The N-Back Challenge is based on a decade’s worth of scientific studies, published in top peer-reviewed journals, including Nature. (For more details, see https://nbackchallenge.com/science.)

The catch? It’s no fun at all! Indeed, the training is designed to be maximally exhausting. If you are determined enough to make it through 20 sessions, however, science suggests that you stand to reap powerful benefits.

Intelligence is the ultimate cognitive ability: You need it to learn, reason, solve novel problems, and see connections. Higher IQs have been linked to improved academic achievement, professional success, and even better health. Since it will take you just 7 hours, in total, to complete the N-Back Challenge, not much more than the length of a single school day, it may prove to be the best investment of time you’ve ever made!

SCIENTIFICALLY SOUND: Not only has the dual n-back paradigm been validated in top peer-reviewed journals, but our two founders – both PhDs, one with a focus on neuroscience, the other with a focus on higher education – have taken particular care to thoroughly align the app with the prevailing scientific research.

TRACK YOUR PROGRESS: In order to help you stay motivated, the N-Back Challenge allows you to visually monitor your progress over time, build up “streaks,” and compare yourself against other learners across various stats.

COMPETE AGAINST YOUR FRIENDS: Perhaps the most powerful way of making sure you remain motivated to complete the Challenge is to tackle it together with friends or colleagues. To make it more fun, we’ve provided leaderboards that allow you to compete based on who has completed the most sessions, racked up the longest streak, and more.

CUSTOMIZE YOUR EXPERIENCE: The N-Back Challenge allows you to choose between different voices across multiple languages, turn on notifications, and customize their timing and style. There are advanced settings for turning on instant button feedback, controlling the n-back level, and tweaking the game speed. And if you are too busy to complete one session every day, you may switch to the Weekly Habit, which gives you a full week to complete each session.


… A PARENT? Give your children an edge at school or university by nudging them to complete the N-Back Challenge. Indeed, why not tackle the Challenge together as a family?

… A GRANDCHILD? Help your grandparents (and other older relatives) fight cognitive decline by introducing them to dual n-back. (See https://nbackchallenge.com/decline.)

… A KNOWLEDGE WORKER? Share the N-Back Challenge with your HR department. Dual n-back may well be the single most cost-effective way of making knowledge workers more productive. (See https://nbackchallenge.com/work.)

… A TEACHER? Prepare your students for a world of rapid technological change by using dual n-back to hone their problem-solving skills. You can have a big impact, with a minimal investment of time! (See https://nbackchallenge.com/class.)

HOW IT WORKS: The N-Back Challenge is free as long as you stick to the program. When you miss or delay a session, we ask you to support us with a “coffee,” which you can buy in-app or earn — for example, by using the Share link in the Settings to invite friends. (Each of you will receive a free coffee.) You can also unlock unlimited free breaks by buying us a “pizza.”

CUSTOMER SUPPORT: Do you have any questions or suggestions? Feel an inexplicable urge to vent your frustrations about the difficulty of dual n-back? Like to say hello? We’re happy to hear from you! Just drop us a note at support@nbackchallenge.com.

ADDITIONAL RESOURCES: To learn more about dual n-back and the N-Back Challenge, browse our repository of articles at https://nbackchallenge.com/articles.

What’s New

Version 1.1.3

The latest version of N-Back Challenge contained a bug that may have cut some of your data, including your coffee balance and game stats. The purpose of this release is to reassure you that your data are backed up on our servers, and that you will see them restored in our next app update. This new build also contains a gift of 4 free coffees. We are working hard to release the new version as soon as possible, and we sincerely apologize for the inconvenience!

Ratings and Reviews

4.7 out of 5
3 Ratings

3 Ratings


More Focused

This app is helping me stay more focused in daily tasks, from reading to housework. It’s tough, kind of like a mind gym, but fulfilling.

Developer Response ,

Thank you very much for sharing! We are really glad to hear that! :)

Plasue ,

Straightforward and useful

A very nice app. Only reason I don’t give five stars is that it doesn’t seem to be usable offline, which is inconvenient at times. Other times connecting/waiting for the connection to game center is a little slow. More depth of statistics and ability to export raw data to do your own analysis would be a nice feature.

Developer Response ,

Hi Plasue,

Thank you so much for your kind words about our app, we appreciate it!

And thank you also for your questions! What you are describing regarding the N-Back Challenge not working when offline sounds like a bug, we are already discussing this with our team. Thank you for reporting this issue!

Speaking about in-depth statistics: those are great observations! We would be very excited to discuss this idea with you and learn about your vision of it. We invite you to write to us at support@nbackchallenge.com and elaborate a bit on the stats that you would like to see. By the way, just a small tip: to see some additional stats within the app, you can tap all stats cards and graphs to flip them over and reveal additional metrics. (You can learn more in this article we have written: https://nbackchallenge.com/articles/track-your-n-back-stats-and-compete-against-friends-via-leaderboards) It may very well be possible, however, that you have already discovered those metrics; in any case, we will be excited to discuss further refinements with you!

App Privacy

The developer, Rivuspurus OU, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Purchases
  • User Content
  • Identifiers
  • Usage Data
  • Diagnostics

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Location
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Game Center

    Challenge friends and check leaderboards and achievements.

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