Identify Colors Pro vs Circle Zen
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Identify Colors Pro
This application helps users test and train their color perception and responsiveness. It also serves as a tool for amblyopia training, including monocular covering exercises.
- Color resolution testing
- Color responsiveness training
- Amblyopia training
- Monocular covering exercises
- Color perception improvement
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This app is used to test and train the player's color resolution and responsiveness, as well as a tool for amblyopia training.(Monocular covering training)
Circle Zen
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Can you draw a perfect circle freehand? A simple yet deeply satisfying challenge game. Use just one finger to draw a circle around the glowing center point — without lifting your finger. When you finish, your circle is scored on how "perfect" it truly is. ■ How to Play Place your finger on the screen and draw a circle surrounding the glowing center dot in one continuous stroke. ■ Score Breakdown · Roundness — how smooth and even your circle is · Center — how well your circle surrounds the target point · Closure — how cleanly your start and end points meet ■ Ranks 0–35% Far From Round 36–51% Keep Trying 52–67% Almost Round 68–79% Good Circle 80–89% Great Circle 90–94% Excellent Circle 95–97% Perfect Circle 98–100% Legendary Circle ■ Perfect for · Killing a few minutes · Sharpening your focus and fine motor skills · Competing with friends for the highest score Simple to start, hard to master. You'll want to keep trying.
Screenshots
Verdict
The clearest difference is ads: Circle Zen at none against Identify Colors Pro's shown. Circle Zen also leads on update cadence (every 2 months vs every 7 months). Identify Colors Pro's advantage is iOS requirement (14.0 vs 16.4). On price, in-app purchases and device support 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Identify Colors Pro ships an update every 7 months, Circle Zen every 2 months. The most recent releases landed on June 1, 2026 and September 20, 2026 respectively.
| Parameter | Identify Colors Pro | Circle Zen |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 7 months | Every 2 months — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 6 MB | 40 MB |
| Age rating | 4+ | 4+ |
| Developer | 益 余 | maoko |
In-app purchases
Identify Colors Pro
No in-app purchases
Circle Zen
No in-app purchases
Questions
Is Identify Colors Pro free?
Is Circle Zen free?
Do Identify Colors Pro or Circle Zen have ads?
Which is updated more often, Identify Colors Pro or Circle Zen?
Other comparisons
