Dual N-Back has been shown to improve working memory and fluid intelligence, which is crucial for academic and professional success.This is a simple clone of Brain Workshop http://brainworkshop.sourceforge.net/ , supporting arbitrary combinations of (position,sound,color,image).If you rate me less than 5 stars, consider leaving a comment. I’ve always tried to improve the app according to users’ comments ^^Differences between this version and the Free one:* No ads, no need for special permissions (Internet, Billing, etc.)* More responsive on low-end devices due to fewer elements on screens* More stable for not having to load ads