# Knock Balls! vs Stack Tower Shooter

The clearest difference is in-app purchases: Stack Tower Shooter at none against Knock Balls!'s 1. Stack Tower Shooter also leads on iOS requirement (11.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Knock Balls! sells 1 one-off in-app purchase. Stack Tower Shooter asks for nothing beyond the download.

Knock Balls! ships an update every 3 months, Stack Tower Shooter every 6 months. The most recent releases landed on October 2, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Knock Balls! | Stack Tower Shooter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (211K ratings)](https://appshunter.io/ios/app/knock-balls/id1424257445/reviews)** | — |
| Number of ratings | **211K** | — |
| Positive reviews | 45.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 3 months** | Every 6 months |
| Monetization | Free with in-app purchases | — |
| Size | 286 MB | 75 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) | [Arjun Cherukuri](https://appshunter.io/developer/1064867066) |

## 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


### Stack Tower Shooter

[App page](https://appshunter.io/ios/app/stack-tower-shooter/id6449821056)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Knock Balls! free?

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

### Is Stack Tower Shooter free?

Stack Tower Shooter is free to download, with no in-app purchases.

### Do Knock Balls! or Stack Tower Shooter have ads?

Both Knock Balls! and Stack Tower Shooter show ads.

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

Knock Balls! ships an update every 3 months, and Stack Tower Shooter every 6 months. Most recently, Knock Balls! was updated on October 2, 2026 and Stack Tower Shooter on September 13, 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.*