# Retro Block Pro vs Knock Out

The clearest difference is price: Knock Out at Free against Retro Block Pro's $4.99. Knock Out also leads on chart position (#86 vs unranked) and device support (3 vs 1). Retro Block Pro's advantage is in-app purchases (none vs 14). On ads there is nothing between them.

Knock Out is free to download; Retro Block Pro costs $4.99 up front. Knock Out sells 14 one-off in-app purchases. Retro Block Pro asks for nothing beyond the download.

## The numbers

| Metric | Retro Block Pro | Knock Out |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | — | **[4.8 (36K ratings)](https://appshunter.io/ios/app/knock-out-physics-puzzle/id6782096197/reviews)** |
| Number of ratings | — | **36K** |
| Positive reviews | — | 50.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 days |
| Monetization | — | Free with in-app purchases |
| Best chart rank | — | **#86** |
| Size | 4 MB | 242 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Christian Irack Flores Maldonado](https://appshunter.io/developer/639666145) | [Combo Games](https://appshunter.io/developer/1641699177) |

## What reviewers say

### Retro Block Pro

[App page](https://appshunter.io/ios/app/retro-block-pro/id6769964663)

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

**In-app purchases:** none


### Knock Out

[App page](https://appshunter.io/ios/app/knock-out-physics-puzzle/id6782096197)

**Currently charting:** #86 Top Free · Casual, #88 Top Free · Puzzle, #104 Top Grossing · Puzzle, #115 Top Grossing · Casual, #190 Top Free · Games (US App Store)

Blast colorful blocks and topple clever structures in this satisfying physics-driven puzzle game. Fire matching blocks to create explosive chain reactions and clear every piece to complete hundreds of handcrafted levels. Enjoy addictive, rewarding gameplay that's easy to learn but challenging to master.

**Highlights:** Addictive shoot-and-clear puzzle gameplay, Satisfying block destruction, Hundreds of handcrafted levels, Unique structures and obstacles, Smooth controls and precision shots, Colorful 3D visuals, Offline play

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

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mini Pack | $0.99 | one-time |
| Mini Pack | $1.99 | one-time |
| Mini Pack | $2.99 | one-time |
| Mini Pack | $3.99 | one-time |
| Mini Pack | $4.99 | one-time |
| Mini Pack | $5.99 | one-time |
| Medium Pack | $7.99 | one-time |
| Medium Pack | $9.99 | one-time |
| Large Pack | $14.99 | one-time |
| Large Pack | $19.99 | one-time |
| Large Pack | $29.99 | one-time |
| Mega Pack | $39.99 | one-time |
| Mega Pack | $54.99 | one-time |
| Mega Pack | $99.99 | one-time |


## Frequently asked questions

### Is Retro Block Pro free?

Retro Block Pro costs $4.99, with no in-app purchases.

### Is Knock Out free?

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

### Do Retro Block Pro or Knock Out have ads?

Neither Retro Block Pro nor Knock Out shows ads.

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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.*