https://play.google.com/store/apps/details?id=de.bbg.EinsteinHD&hl=en
Einstein Brain Training - Apps on Google Play
brain training appson googleeinsteinplay
https://www.livescience.com/43140-brain-training-apps-just-make-you-better-at-playing-games.html
Brain-Training Apps Just Make You Better at Playing Games | Live Science
Feb 6, 2014 - Studies raise doubt about whether these programs and apps have any tangible effect on improving cognition.
brain training apps