Comparison

CircleMaster vs Circle Judge

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

CircleMaster

This app scores your drawn circles against a perfect circle, offering points and levels based on accuracy. Enhance your drawing skills, unlock combos, and compete with others. Features include a level-up system, strict pro mode, and tips to improve your technique.

Highlights
  • Circle scoring against perfect circle
  • Level up system
  • Pro mode with strict scoring
  • Combo system for bonus points
  • Tips and tutorials for skill improvement
Features
Read full description

Welcome to “CircleMaster”! This app is a wonderful tool that compares and scores the circles you draw with a perfect circle. Every time you draw, you gain experience points, enhancing your art skills to the next level. The more beautiful the circle you draw, the more your proficiency improves, and you can showcase your brilliant skills on social media. This app is an innovative platform to test your art skills. Challenge the scoring system that shows percentages in comparison with a perfect circle, and improve your art skills. Scoring criteria: If the circle is less than 90%, you get 2 points. If the circle is 90% or more, you get 10 points. You can reach a new level with 100 points. Furthermore, if you draw a circle of 90% or more consecutively, a combo occurs, and you can earn bonus points of 20 points for the second consecutive time and 30 points for the third consecutive time. In other words, the more beautiful the circle you draw, the smoother your level up. The app also has a pro mode where you can change to strict scoring. For those who want to know their true strength, we recommend pro mode. For cartoonists, manga artists, dexterous people, designers, and anyone who likes to draw circles, it offers fun and challenges. Features: Level up system: Compete to see how close you can get to a perfect circle. Pro mode: Measure true strength with strict scoring. Combo system: Earn bonus points every time you draw a beautiful circle and accelerate leveling up. Tips and tutorials: Provide support through notification system to improve circle drawing skills. This app is an essential tool for art enthusiasts and art-related professionals. It is recommended for those who want to become masters of art, those who want to improve their circle drawing techniques, and anyone interested in art. In addition, “CircleMaster” can also be enjoyed with friends and family. Compete with your friends and family. Let’s see who can draw the most beautiful and perfect circle. Also, “CircleMaster” is educational. Children can learn about shapes and geometric concepts while having fun. This app also helps with relaxation and stress relief. Relaxing and drawing a beautiful circle at the end of the day is very healing. Start your art journey with “CircleMaster” and reach a new level. Improve your art skills and surprise yourself. Start your art journey with this app. Polish your skills while having fun and surprise yourself. Please try “CircleMaster” to polish your circle drawing technique and reach a new level.

About

Circle Judge

This app scores the roundness of freehand circles drawn on your screen. It provides instant feedback on how close your drawing is to a perfect circle, with options for customization and sharing your results.

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

Screenshots

CircleMaster4 screens
Circle Judge4 screens

Verdict

The call

The clearest difference is review sentiment: CircleMaster at 100% against Circle Judge's 50%. Circle Judge's advantage is in-app purchases (none vs 3) and update cadence (every 5 months vs every 10 months). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. CircleMaster sells 3 one-off in-app purchases. Circle Judge asks for nothing beyond the download.

UpkeepUpdate frequency

CircleMaster ships an update every 10 months, Circle Judge every 5 months. Both last shipped on October 30, 2026.

Scorecard4 real differences · 6 level
CircleMaster versus Circle Judge: the parameters behind the verdict, then further details
ParameterCircleMasterCircle Judge
PriceFreeFree
Rating4.6 (30 ratings) — better—
Positive reviews100.0% of reviews — better50.0% of reviews
Number of ratings30 — better—
Update frequencyEvery 10 monthsEvery 5 months — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.6
Further details — not scored
Size131 MB6 MB
Age rating17+4+
DeveloperYuji OnishiMITSUKO MARGOT KUBOTA ONO

Customer experience

CircleMaster

All ratings30 ratings
Positive90.0%
Neutral0.0%
Negative10.0%
Written reviews22 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Circle Judge

Written reviews2 reviews
Positive50.0%
Neutral50.0%
Negative0.0%

In-app purchases

3 purchases

CircleMaster

One-time3
  • Ad removal$2.00
  • Pro Mode unlock$2.00
  • Remove ads and unlock pro mode$3.00
None

Circle Judge

No in-app purchases

Questions

Is CircleMaster free?
CircleMaster is free to download, with in-app purchases available.
Is Circle Judge free?
Circle Judge is free to download, with no in-app purchases.
Do CircleMaster or Circle Judge have ads?
Both CircleMaster and Circle Judge show ads.
Which is updated more often, CircleMaster or Circle Judge?
CircleMaster ships an update every 10 months, and Circle Judge every 5 months. Most recently, CircleMaster was updated on October 30, 2026 and Circle Judge on October 30, 2026.

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