# RETRO vs Stack Attack

The clearest difference is in-app purchases: Stack Attack at none against RETRO's 1. Stack Attack also leads on ads (none vs shown) and update cadence (every 4 weeks vs every 11 months). On price and device support there is nothing between them.

Both are free to download. RETRO sells 1 one-off in-app purchase. Stack Attack asks for nothing beyond the download.

RETRO ships an update every 11 months, Stack Attack every 4 weeks. The most recent releases landed on September 23, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | RETRO | Stack Attack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (15 ratings)](https://appshunter.io/ios/app/retro-space/id1376056227/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 33.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 11 months | **Every 4 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 107 MB | 39 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Apps Bergman Ltda](https://appshunter.io/developer/1117417290) | [Mikhail Razin](https://appshunter.io/developer/1460485493) |

## What reviewers say

### RETRO

[App page](https://appshunter.io/ios/app/retro-space/id1376056227)

Pilot a spacecraft in this retro-inspired arcade shooter. Blast through waves of alien invaders and face off against powerful bosses across eight challenging levels. Compete for the highest score and enjoy a modern take on classic mobile gaming.

**Highlights:** 8 levels, 8 bosses, Diverse enemies, Modern graphics, Classic gameplay, Score comparison

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove all ads | $2.99 | one-time |


### Stack Attack

[App page](https://appshunter.io/ios/app/stack-attack-block-puzzle/id6449266462)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RETRO free?

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

### Is Stack Attack free?

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

### Do RETRO or Stack Attack have ads?

RETRO shows ads; Stack Attack does not.

### Which is updated more often, RETRO or Stack Attack?

RETRO ships an update every 11 months, and Stack Attack every 4 weeks. Most recently, RETRO was updated on September 23, 2026 and Stack Attack on May 16, 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.*