# Knock Balls! vs Block Stack

The clearest difference is update cadence: Block Stack at every 4 days against Knock Balls!'s every 3 months. Block Stack also leads on iOS requirement (11.0 vs 15.0). Knock Balls!'s advantage is ratings volume (211K vs 9). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Knock Balls! sells 1 one-off in-app purchase and Block Stack sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for Knock Balls! against 4.6 for Block Stack. That said, the two scores are not equally well evidenced: Knock Balls! has 211K ratings behind it against 9, so its average is the more settled of the two.

Knock Balls! ships an update every 3 months, Block Stack every 4 days. The most recent releases landed on October 23, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Knock Balls! | Block Stack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (211K ratings)](https://appshunter.io/ios/app/knock-balls/id1424257445/reviews)** | [4.6 (9 ratings)](https://appshunter.io/ios/app/block-stack-smash-box-balls/id1526851829/reviews) |
| Number of ratings | **211K** | 9 |
| Positive reviews | 45.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 4 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 286 MB | 77 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Voodoo](https://appshunter.io/developer/714804730) | [Oleksandr Lushpihan](https://appshunter.io/developer/1406512880) |

## What reviewers say

### Knock Balls!

[App page](https://appshunter.io/ios/app/knock-balls/id1424257445)

Test your aim by throwing balls to demolish various structures. Enjoy hundreds of levels with diverse visuals and challenging gameplay. Simple one-tap controls make it easy to pick up and play.

**Highlights:** Throw balls to crush structures, Hundreds of levels, Diverse visual ambiances, One-tap controls, Addictive gameplay

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $3.99 | one-time |

**What reviewers like**

- 🚀 Addictive and fun
- 👍 Satisfying physics and gameplay
- 🎨 Visually appealing graphics

**What reviewers complain about**

- 💢 Excessive ads
- 🔁 Repetitive levels and block formations
- 🔇 Lack of sound effects

**Reported bugs**

- Game crashes or freezes after ads
- Inconsistent performance on some devices

**Requested features**

- More challenging and varied levels
- Ability to save/carry over unused balls
- Customizable cannons and upgrades


### Block Stack

[App page](https://appshunter.io/ios/app/block-stack-smash-box-balls/id1526851829)

Tap to launch balls and smash voxel towers in this addictive 3D physics arcade game. Collect gems to unlock new items and progress through fun, competitive levels with stunning visual effects.

**Highlights:** One-hand tap controls, Addictive 3D physics, Voxel tower smashing, Gem collection for unlocks, Relaxing and easy levels, Stunning visual effects

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $1.99 | one-time |


## Frequently asked questions

### Is Knock Balls! free?

Knock Balls! is free to download, with in-app purchases available.

### Is Block Stack free?

Block Stack is free to download, with in-app purchases available.

### Which has better reviews, Knock Balls! or Block Stack?

Knock Balls! is rated higher. Knock Balls! averages 4.6 out of 5 from 211K ratings, while Block Stack averages 4.6 from 9 ratings.

### Do Knock Balls! or Block Stack have ads?

Both Knock Balls! and Block Stack show ads.

### Which is updated more often, Knock Balls! or Block Stack?

Knock Balls! ships an update every 3 months, and Block Stack every 4 days. Most recently, Knock Balls! was updated on October 23, 2026 and Block Stack on October 1, 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.*