About this app
Calculates the arithmetic mean, the geometric mean and the harmonic mean as well as the standard deviation and the confidence interval of a set of numbers. Different data sets can be saved and calculated. The calculator results can be emailed.
Latest release
What’s New
- bugs fixed
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Sep 18, 2026 · 6:22 AM $0.99
Screenshots
