Circle Judge - Roundness Check
iOS app by MITSUKO MARGOT KUBOTA ONO. Graphics & Design · MITSUKO MARGOT KUBOTA ONO
- Store rating
- 0 / 5
- Store rating count
- 0
- Download price
- Free to download
- In-app purchases
- Unknown
- Version
- 1.2.0
- Listing last refreshed
- 2026-09-07
View the original store listing
Store description excerpt
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
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