# Clown Knockdown vs Aetherline Protocol

The clearest difference is in-app purchases: Clown Knockdown at none against Aetherline Protocol's 4. Clown Knockdown also leads on ads (none vs shown) and iOS requirement (15.0 vs 17.6). Aetherline Protocol's advantage is update cadence (every 9 days vs every 6 weeks). On price and device support there is nothing between them.

Both are free to download. Aetherline Protocol sells 4 one-off in-app purchases. Clown Knockdown asks for nothing beyond the download.

Clown Knockdown ships an update every 6 weeks, Aetherline Protocol every 9 days. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Clown Knockdown | Aetherline Protocol |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 9 days** |
| Size | 295 MB | 31 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Asad Manzoor](https://appshunter.io/developer/1833964293) | [Le Nguyen](https://appshunter.io/developer/1871997463) |

## What reviewers say

### Clown Knockdown

[App page](https://appshunter.io/ios/app/clown-knockdown-fun-puzzle/id6761773863)

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

**In-app purchases:** none


### Aetherline Protocol

[App page](https://appshunter.io/ios/app/aetherline-protocol/id6786246670)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Aether Cache | $0.99 | one-time |
| Aether Vault | $4.99 | one-time |
| Remove Ads | $4.99 | one-time |
| Aether Reactor | $9.99 | one-time |


## Frequently asked questions

### Is Clown Knockdown free?

Clown Knockdown is free to download, with no in-app purchases.

### Is Aetherline Protocol free?

Aetherline Protocol is free to download, with in-app purchases available.

### Do Clown Knockdown or Aetherline Protocol have ads?

Aetherline Protocol shows ads; Clown Knockdown does not.

### Which is updated more often, Clown Knockdown or Aetherline Protocol?

Clown Knockdown ships an update every 6 weeks, and Aetherline Protocol every 9 days. Most recently, Clown Knockdown was updated on October 10, 2026 and Aetherline Protocol on October 7, 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.*