# Knock Ball 3D vs Block Stack

The clearest difference is in-app purchases: Knock Ball 3D at none against Block Stack's 1. Knock Ball 3D also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Block Stack sells 1 one-off in-app purchase. Knock Ball 3D asks for nothing beyond the download.

## The numbers

| Metric | Knock Ball 3D | Block Stack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (9 ratings)](https://appshunter.io/ios/app/block-stack-smash-box-balls/id1526851829/reviews)** |
| Number of ratings | — | **9** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 4 days |
| Monetization | — | Free with in-app purchases |
| Size | 34 MB | 77 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [App Swim LLC](https://appshunter.io/developer/1475582966) | [Oleksandr Lushpihan](https://appshunter.io/developer/1406512880) |

## What reviewers say

### Knock Ball 3D

[App page](https://appshunter.io/ios/app/knock-ball-3d/id1517978793)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Ball 3D free?

Knock Ball 3D is free to download, with no in-app purchases.

### Is Block Stack free?

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

### Do Knock Ball 3D or Block Stack have ads?

Block Stack shows ads; Knock Ball 3D does not.

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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.*