About this app
Complete subtraction problems with minuends to 9,999. Use Place Value Math Chips as your tool to solve the problems. Or, use Demo Mode to have the app showing each step of the process. The app will demonstrate regrouping/borrowing across zeros.
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 12, 2026 · 4:54 PM Free
Screenshots
