About this app
Sharpen your mind and test your arithmetic skills in a distraction-free environment designed for focus and elegance. Whether you're a student building math confidence or an adult keeping your brain sharp, Charm24 scales with you.
Latest release
What’s New
Minor modification for ADA Compliance Requirements
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 Aug 15, 2026 · 1:29 PM Free
Screenshots
