# Can Knockdown 3 vs Dr. Rocket

The clearest difference is in-app purchases: Dr. Rocket at none against Can Knockdown 3's 1. Dr. Rocket also leads on iOS requirement (12.0 vs 15.0). Can Knockdown 3's advantage is ratings volume (2.1K vs 54) and update cadence (every 2 months vs every 6 months). On price, rating, review sentiment and ads there is nothing between them.

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

Can Knockdown 3 holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: Can Knockdown 3 has 2.1K ratings behind it against 54, so its average is the more settled of the two. Written reviews point the same way: 76% of Can Knockdown 3's written reviews are positive against 72% of Dr. Rocket's.

Can Knockdown 3 ships an update every 2 months, Dr. Rocket every 6 months. The most recent releases landed on September 30, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Can Knockdown 3 | Dr. Rocket |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (2.1K ratings)](https://appshunter.io/ios/app/can-knockdown-3/id651966498/reviews)** | [4.4 (54 ratings)](https://appshunter.io/ios/app/dr-rocket/id981111702/reviews) |
| Number of ratings | **2.1K** | 54 |
| Positive reviews | **75.7% of reviews** | 72.2% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 186 MB | 8 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) | [SUD Inc.](https://appshunter.io/developer/453469451) |

## 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


### Dr. Rocket

[App page](https://appshunter.io/ios/app/dr-rocket/id981111702)

Pilot your rocket through space by tapping the screen to steer. Test your reflexes and see how far you can travel in this simple, arcade-style game.

**Highlights:** Simple touch controls, Rocket flight simulation, Endless space journey, High score chasing

**Features:** 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 Dr. Rocket free?

Dr. Rocket is free to download, with no in-app purchases.

### Which has better reviews, Can Knockdown 3 or Dr. Rocket?

Can Knockdown 3 is rated higher. Can Knockdown 3 averages 4.6 out of 5 from 2.1K ratings, while Dr. Rocket averages 4.4 from 54 ratings.

### Do Can Knockdown 3 or Dr. Rocket have ads?

Both Can Knockdown 3 and Dr. Rocket show ads.

### Which is updated more often, Can Knockdown 3 or Dr. Rocket?

Can Knockdown 3 ships an update every 2 months, and Dr. Rocket every 6 months. Most recently, Can Knockdown 3 was updated on September 30, 2026 and Dr. Rocket on September 24, 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.*