# Circle Judge - Roundness Check — Draw a circle, get a score

> Freehand circle drawing roundness scoring and analysis tool. (iPhone/iPad app by MITSUKO MARGOT KUBOTA ONO.)

- Source: https://appshunter.io/ios/app/circle-judge-roundness-check/id6751216299 (this page in markdown: same URL + `.md`)
- Developer: [MITSUKO MARGOT KUBOTA ONO](https://appshunter.io/developer/1799524637)
- Category: Graphics & Design, Entertainment
- Price: Free
- Age rating: 4+
- Requires: iOS 16.6 · 5 MB
- Languages: American English, Arabic, Canadian French, Hindi, Indonesian, Japanese, Korean, Brazilian Portuguese, Russian, Chinese (Simplified, China) and 5 more
- Released: 2025-08-22
- Data updated: 2026-08-31
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/circle-judge-roundness-check/id6751216299/reviews.md

## What is Circle Judge?

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

## Key features

- One-tap roundness scoring
- Reference circle overlay
- Customizable pen and guide colors
- Share drawings with scores
- Light/Dark Mode support

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/circle-judge-roundness-check/id6751216299/reviews.md

### 3/5 — 過去の採点見たい

*2026-02-01*

過去のきろくみせてくれ

### 5/5 — 神

*2026-01-11*

暇つぶしで10時間これで溶けた

## Frequently asked questions about Circle Judge

### What is Circle Judge?

Circle Judge is a free app that analyzes the roundness of freehand circles you draw on your screen. It provides an instant percentage score indicating how close your drawing is to a perfect circle.

### Does Circle Judge have ads?

Yes, Circle Judge contains advertisements. As a free application, it utilizes ads to support its development and maintenance.

### How does Circle Judge score roundness?

After you draw a circle and lift your finger, the app automatically analyzes your stroke. It then displays a score from 0-100% representing the roundness of your drawing.

### Can I customize the drawing experience in Circle Judge?

Yes, Circle Judge allows you to customize the pen color and the guide circle color. This helps personalize your drawing and practice sessions.

### What devices does Circle Judge support?

Circle Judge is available for iPhone and iPad devices, offering a consistent experience across Apple's mobile platforms.

### How often is Circle Judge updated?

The app was last updated on January 7, 2026, with version 1.1.1. This indicates regular maintenance and potential feature additions.

### Can I share my drawings from Circle Judge?

Yes, Circle Judge features simple sharing functionality. You can share your drawn circle as an image, complete with its roundness score.

### What is the age rating for Circle Judge?

Circle Judge has an age rating of 4+, making it suitable for a wide range of users, including children and adults interested in drawing practice.

## Version history (last 3 releases)

### 1.1.1 — 2026-01-07

Bug fixes.

### 1.1.0 — 2026-01-06

1. Added support for multiple languages (Korean, Chinese, and more).
2. Added a language switch setting.

### 1.0 — 2025-08-22

No release notes.

## Apps similar to Circle Judge

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Circle Master - Challenge](https://appshunter.io/ios/app/circle-master-challenge/id6503243085) | 2.0 (1) | Free | Graphics & Design |
| [GeoArt Creator](https://appshunter.io/ios/app/geoart-creator/id6759813354) | — | $0.49 | Graphics & Design |
| [CircleMaster -Circle scoring-](https://appshunter.io/ios/app/circlemaster-circle-scoring/id6470065455) | 4.6 (30) | Free | Graphics & Design |
| [Kaleido-Art](https://appshunter.io/ios/app/kaleido-art/id6740176081) | — | Free | Graphics & Design |
| [小白学CAD](https://appshunter.io/ios/app/cad/id6764611695) | — | $0.99 | Graphics & Design |
| [One Circle - Draw one circle](https://appshunter.io/ios/app/one-circle-draw-one-circle/id6761993721) | — | Free | Graphics & Design |

## More apps by MITSUKO MARGOT KUBOTA ONO

- [PockeLog - Pocket Money Book](https://appshunter.io/ios/app/pockelog-pocket-money-book/id6742700971)
- [American Football Timer](https://appshunter.io/ios/app/american-football-timer/id6743041280)
- [Bowlard Log](https://appshunter.io/ios/app/bowlard-log/id6743524926)
- [ToDoTabs - Manage Tasks by Tab](https://appshunter.io/ios/app/todotabs-manage-tasks-by-tab/id6743955923)
- [Pomodoro Timer – Focus & Done](https://appshunter.io/ios/app/pomodoro-timer-focus-and-done/id6744547819)
- [Defaced - Face Filters](https://appshunter.io/ios/app/defaced-face-filters/id6744590738)

All apps by MITSUKO MARGOT KUBOTA ONO: https://appshunter.io/developer/1799524637

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-31.*