“…In 12 randomized studies (9 RCTs) and 3 quasi-experimental studies, researchers examined children's math and a number-writing task (n = 1) for groups using interactive math apps, 26,27,36,38,39,41,60 whereas the remaining 2 RCTs reported statistically equivalent gains between the groups. 33,35 Of the 4 studies (3 RCTs) in which researchers compared a math app intervention to control groups using apps not targeting math (ie, attention controls) or not receiving treatment, 3 reported better outcomes on early math measures for app intervention groups compared with controls, 28,31,40 and 1 reported no significant differences between groups.…”