Brain Trainer Working Memory Training

This free app is intended to help improve your working memory by allowing you to memorise an increasingly large grid of coloured jewels.

"Working memory is a central intellectual faculty, linked to IQ, ageing, and mental health. It has been claimed that working memory training programs are effective means, not only for treating attention-deficit/hyperactivity disorder (ADHD) and other childhood disorders, but to improve intelligence and school attainment in all children and adults." -- Wikipedia