# Can Knockdown 3 vs Rainbow Stacking

The clearest difference is rating: Can Knockdown 3 at 4.6 against Rainbow Stacking's 4.0. Can Knockdown 3 also leads on ratings volume (2.1K vs 1). Rainbow Stacking's advantage is in-app purchases (none vs 1) and update cadence (every 2 weeks vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Can Knockdown 3 sells 1 one-off in-app purchase. Rainbow Stacking asks for nothing beyond the download.

Can Knockdown 3 holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: Can Knockdown 3 has 2.1K ratings behind it against 1, so its average is the more settled of the two.

Can Knockdown 3 ships an update every 2 months, Rainbow Stacking every 2 weeks. The most recent releases landed on October 19, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Can Knockdown 3 | Rainbow Stacking |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (2.1K ratings)](https://appshunter.io/ios/app/can-knockdown-3/id651966498/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/rainbow-stacking/id1644587632/reviews) |
| Number of ratings | **2.1K** | 1 |
| Positive reviews | 75.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 186 MB | 46 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Infinite Dreams Inc.](https://appshunter.io/developer/306712040) | [Kevin Merz](https://appshunter.io/developer/1642543757) |

## What reviewers say

### Can Knockdown 3

[App page](https://appshunter.io/ios/app/can-knockdown-3/id651966498)

Test your aim and puzzle-solving skills in this physics-based carnival game. Knock down cans across multiple challenging levels with stunning 3D graphics and realistic physics. Unlock new levels and discover hidden secrets.

**Highlights:** Multiple challenging 3D levels, Easy to tricky puzzles, Realistic physics engine, Gorgeous 3D graphics, Unlockable levels and secrets, Achievements and badges

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads! | $1.99 | one-time |

**What reviewers like**

- 🎮 Excellent game with great graphics
- 👍 Highly addictive and fun to play
- 🎨 Beautiful and realistic visuals
- 🕹️ Challenging and engaging gameplay
- 🎉 Satisfying and rewarding experience

**What reviewers complain about**

- 🔍 Too many ads interrupting gameplay
- 🐛 Frequent crashes and performance issues
- 💰 Paid upgrades required to remove ads
- 🤯 Extremely frustrating difficulty at times
- 🔌 Drains battery life quickly

**Reported bugs**

- Game crashes on launch for some devices
- Levels freeze or become unresponsive
- Purchased upgrades not restoring properly
- Ads playing with sound even in silent mode
- Compatibility issues with newer devices

**Requested features**

- More levels and content updates
- Option to disable ads without paying
- Improved performance and stability
- Customizable controls and settings
- Ability to save progress and continue later


### Rainbow Stacking

[App page](https://appshunter.io/ios/app/rainbow-stacking/id1644587632)

A level-based block-stacking game with simple and beautiful graphics. Players stack blocks to reach a target line, offering a straightforward yet engaging puzzle experience.

**Highlights:** Level-based gameplay, Block stacking mechanics, Reach target line objective, Simple graphics, Beautiful design

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Can Knockdown 3 free?

Can Knockdown 3 is free to download, with in-app purchases available.

### Is Rainbow Stacking free?

Rainbow Stacking is free to download, with no in-app purchases.

### Which has better reviews, Can Knockdown 3 or Rainbow Stacking?

Can Knockdown 3 is rated higher. Can Knockdown 3 averages 4.6 out of 5 from 2.1K ratings, while Rainbow Stacking averages 4.0 from 1 ratings.

### Do Can Knockdown 3 or Rainbow Stacking have ads?

Both Can Knockdown 3 and Rainbow Stacking show ads.

### Which is updated more often, Can Knockdown 3 or Rainbow Stacking?

Can Knockdown 3 ships an update every 2 months, and Rainbow Stacking every 2 weeks. Most recently, Can Knockdown 3 was updated on October 19, 2026 and Rainbow Stacking on September 25, 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.*