Powerful app to test and improve your short term memory. It also improves your cognitive capacities! This brain training app for your memory and brain functioning is based on the most researched Dual N-Back method. on Lucid Hangout: score 8.5 "A smart and effective memory game for the sharpest minds" 8.5 "A smart and effective memory game for the sharpest minds” “We have become a big fan of this game” score 8.92

◆ Improves working memory and analytical thinking skills / your cognitive capacities
This brain trainer app improves your fluid intelligence by training your working memory. This way your IQ test scores may become higher. It does so with an unique Dual N-Back game. A spotlight is shown in a 3x3 grid and you must tap left if the previous level position is the same as the current, or right if the audio played matches the previous level letter.
◆ Multiple levels While the gameplay sounds easy, it actually requires a lot of concentration and working memory to accurately match the spotlight. It features multiple levels, so the higher you go the more focusing & concentration your brain requires thus it will train better and even improve your IQ.
◆ Minimalist design The game has a minimalist design. The chosen colors and style are perfectly crafted to avoid disrupting your sleep even if you do a session at night.
◆ Score points graph For each session you take a score will be shown (above 80% you will go a level up) and that is kept historically to see your progress in time with a score graph.
◆ Playable in portrait as well as in landscape orientation Very easy to play because the only thing you have to do is touch the screen anywhere at the left or at right side.
◆ Sublime music specifically designed and created for this app
◆ No ads These annoying ads would only withheld your progress

Simple, but in the end not easy! The only thing you have do is a left or a right touch for a visual or an audio match. For this app there is no need to know the language of the spoken audio letters.

This brain training app is based on the scientifically proven method for improving Fluid Intelligence (part of your IQ) and working memory (short term memory of your brain). Please see for more information for dual N-Back or

It is much appreciated if you leave a review for brain trainer Lucid Hangout. Especially nice ones ;) If you have questions you can leave me a message:


What’s New

Version 2.40

- Solved crash with audio


R Nobel
80.2 MB
Health & Fitness

Requires iOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Arabic, Catalan, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese

Age Rating
Rated 4+
© 2017 Nobelapp
In-App Purchases
  1. Access to all N-Back levels. $0.99


  • Family Sharing

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

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