Circle Judge - Roundness Check

Developer: MITSUKO MARGOT KUBOTA

Category: Art & Design

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124.3K installs

Ratings not yet available

10.9K monthly active users

Revenue not available

Circle Judge - Roundness Check Summary

Circle Judge - Roundness Check is a mobile iOS app in Art And Design by MITSUKO MARGOT KUBOTA ONO. Released in Aug 2025 (6 months ago). Based on AppGoblin estimates, it reaches roughly 10.9K monthly active users . Store metadata: updated Jan 7, 2026.

Store info: Last updated on App Store on Jan 7, 2026 .

SDKs, Trackers & Permissions

App not yet scanned for SDKs.

App Details

Store ID: 6751216299

First Released: 2025-08-22

Store Last Updated: 2026-01-07

In-App Purchases: No

Ads: No

Website: mitsuko-ono.com

App Store

Crawl Status: Success

AppGoblin First Crawled: 2025-11-14

AppGoblin Last Crawled: 2026-03-01

Ads & App-Ads.txt

Ads.txt Last Crawled: 2025-10-14

Ads.txt Crawl Status: Success

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4.99★

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App Description

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