If you do not have a Pearson account, you can purchase a subscription directly on the StatCrunch website. Go to StatCrunch.com.
No installation needed (most of the time).
Note: The mobile app is designed for quick calculations and data entry, but the web browser version offers the full, robust suite of features. Benefits of Using StatCrunch
Descriptive statistics, regression analysis, hypothesis testing, ANOVA, and more.