MeeGenius puts a library behind your touchscreen. First released with the 2010 launch of the iPad, the app features more than 700 narrated children's books, grouped into easy-to-navigate categories. Parents, teachers, and kids can peruse the science section to discover the facts behind magnets, gravity, clouds, and other subjects, or leap into a mystery to try to crack the case before the bad guys get away. Age groups help caretakers figure out which books might be appropriate for their toddler, 6-year-old, or spouse who just really likes pictures, and sections such as "character development" and "diversity" can guide kids down the path to becoming pleasant adults.