About this app
Practice your math facts as you race against the clock. CrossSum is word search for math. There’s a number at the top of the screen. Somewhere in the grid is the math fact that equals that number. Your job is to find it as fast as possible. As you advance, CrossSum will get harder, with bigger numbers, different operations, and a larger grid.
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 19, 2026 · 11:23 AM Free