About this app
Draw a circle freehand and get its roundness (circularity) scored. The app analyzes your stroke automatically and instantly shows how close it is to a perfect circle in percent. ● Features * One-tap scoring: draw a circle and lift your finger—shows 0–100% roundness * Easy comparison: overlays a same-size reference circle (toggle on/off) * Customization: freely choose pen color and guide color * Simple sharing: share the drawn circle as an image with the score * Appearance: supports Light/Dark Mode ● Great for * Practicing steady, freehand circles * Visualizing and improving hand jitter in design/sketching * Having fun “roundness challenges” with friends and family ● How to use 1. Trace a circle with your finger on the screen 2. Lift your finger to auto-score and show the reference circle 3. Tap Share to send a square image with the score
Latest release
What’s New
Bug fixes.
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 20, 2026 · 3:25 PM Free
Screenshots
