Chromatic Gem vs 21
Price, ratings, monetisation and update history for both games, side by side โ with what reviewers say about each.
Chromatic Gem
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Three gems of the same color are automatically eliminated together
21
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Hit 21. Don't bust. Claim falling cards, stack smart, and clear every slot. Easy to learn, impossible to master.
Screenshots
Verdict
The clearest difference is ads: Chromatic Gem at none against 21's shown. 21's advantage is update cadence (every 2 days vs every 30 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Chromatic Gem ships an update every 30 months, 21 every 2 days. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.
| Parameter | Chromatic Gem | 21 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 30 months | Every 2 days โ better |
| Ads | No โ better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPod |
| Requires iOS | 15.6 | 15.1 โ better |
| Further details โ not scored | ||
| Size | 7 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | ็ฟๆ ๆฑ | Chee Hoong Khor |
In-app purchases
Chromatic Gem
No in-app purchases
21
No in-app purchases
Questions
Is Chromatic Gem free?
Is 21 free?
Do Chromatic Gem or 21 have ads?
Which is updated more often, Chromatic Gem or 21?
Other comparisons
