About this app
Probably the easiest way to calculate percentage, root, or compound interest on given time period. You can use it for example in math or investment calculation.
Latest release
What’s New
Version 1.2
Apr 18, 2016
Minor fix
Audience growth
Ratings growth
7-day gain
+0
Ratings / day
0.0
30-day gain
+0
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
Current
Free
Historical low
Free
Paid → free
0×
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 20, 2026 · 12:01 PM Free
Screenshots
