# Zero21 Card Game vs Rescue Brick

The clearest difference is rating: Rescue Brick at 5.0 against Zero21 Card Game's 4.0. Rescue Brick also leads on ads (none vs shown) and update cadence (every 4 days vs every 65 months). Zero21 Card Game's advantage is ratings volume (3 vs 1). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Rescue Brick holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Zero21 Card Game ships an update every 65 months, Rescue Brick every 4 days. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Zero21 Card Game | Rescue Brick |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (3 ratings)](https://appshunter.io/ios/app/zero21-card-game/id1550265606/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rescue-brick/id6744133146/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 65 months | **Every 4 days** |
| Monetization | Ad-supported | **Free** |
| Size | 58 MB | 86 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Le Nhung](https://appshunter.io/developer/1436505077) | [NEXT SOLUTIONS JOINT STOCK COMPANY](https://appshunter.io/developer/1569127793) |

## What reviewers say

### Zero21 Card Game

[App page](https://appshunter.io/ios/app/zero21-card-game/id1550265606)

This number puzzle game challenges you to keep your score between 0 and 21 by collecting cards. Utilize power-up cards and strategic choices to navigate diverse levels and daily challenges. It's a fun, relaxing way to train your brain.

**Highlights:** Keep score between 0 and 21, Collect number cards, Use power-up cards, Unlock new card collections, Daily challenges, Diverse card layouts

**Features:** macOS Compatibility

**In-app purchases:** none


### Rescue Brick

[App page](https://appshunter.io/ios/app/rescue-brick/id6744133146)

Engage your mind with a challenging puzzle game where you tap to remove blocks and free the key piece. With hundreds of levels and simple controls, it offers a relaxing yet addictive experience that tests your logic and strategy.

**Highlights:** Tap to remove or shift blocks, Unlock tricky brick formations, Hundreds of mind-bending levels, Simple one-tap controls, Relaxing yet addictive gameplay, No time limits

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Zero21 Card Game free?

Zero21 Card Game is free to download, with no in-app purchases.

### Is Rescue Brick free?

Rescue Brick is free to download, with no in-app purchases.

### Which has better reviews, Zero21 Card Game or Rescue Brick?

Rescue Brick is rated higher. Zero21 Card Game averages 4.0 out of 5 from 3 ratings, while Rescue Brick averages 5.0 from 1 ratings.

### Do Zero21 Card Game or Rescue Brick have ads?

Zero21 Card Game shows ads; Rescue Brick does not.

### Which is updated more often, Zero21 Card Game or Rescue Brick?

Zero21 Card Game ships an update every 65 months, and Rescue Brick every 4 days. Most recently, Zero21 Card Game was updated on November 3, 2026 and Rescue Brick on October 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*