Z Interval Test
The Z Interval Test does not show up in my version of the app and that is what I needed to use for my statistics class.
Not enough ratings yet to assess StatsCalc.
StatsCalc appears legitimate, with a few gaps. AppsHunter Legitimacy Score for StatsCalc is 73/100.
Based on 73 of 100 points across 7 verification signals from App Store and developer data.