The Color Code vs Rectangles & Primes
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
The Color Code
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It is a game that competes scores by answering color hexadecimal color code. In one game you will be asked 5 questions and you will compete for the total score for each question. The smaller the difference between the answer color and the answer color, the higher the score can be acquired. Share the score after winning the high score and compete with your friends! There are 3 modes Ā· Mode to be qualified from standard color (16 colors) Ā· Mode to be qualified from Web safe color (216 colors) Ā· Mode to be selected from all colors (16777216 colors) You can choose from. Recommended for Ā· Designer, illustrator Ā· Writing HTML, CSS at work Ā· Absolute color sense owner Ā· The color of the world is all visible with code The color code is the connection method of connecting the depths of each color of RGB (red, green, blue) in hexadecimal notation after #, and it is a notation method used in designation of colors such as web design. (Example) # 000000 is black, # ffffff is white
Rectangles & Primes
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Rectangle provides a fun and insightful maths experience for kids aged 6 to 12. They will improve their understanding of number factorization and prime numbers.
Screenshots
Verdict
The clearest difference is update cadence: The Color Code at every 5 days against Rectangles & Primes's every 3 weeks. The Color Code also leads on iOS requirement (6.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
The Color Code ships an update every 5 days, Rectangles & Primes every 3 weeks. The most recent releases landed on September 10, 2026 and September 15, 2026 respectively.
| Parameter | The Color Code | Rectangles & Primes |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days ā better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 6.0 ā better | 15.0 |
| Further details ā not scored | ||
| Size | 47 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Jun Nishio | Johannes Charra |
In-app purchases
The Color Code
No in-app purchases
Rectangles & Primes
No in-app purchases
Questions
Is The Color Code free?
Is Rectangles & Primes free?
Do The Color Code or Rectangles & Primes have ads?
Which is updated more often, The Color Code or Rectangles & Primes?
Other comparisons
