Digit Span - Train of Thought Publisher: Michal Mandrysz Genre: Education Released: 1 Dec, 2016 Size: 57.7 MB Price: $0.99 Click here to request a review of this app App Store Info Description It is said people can hold up to 7-8 items in their working memory. Can you beat that limit? What's New in Version 1.4.27 Improvements for new devices and OS. Screenshots Screenshot 1 of 4