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
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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