# TURN. vs レトロインベイダー：昭和ゲームセンター

The clearest difference is iOS requirement: レトロインベイダー：昭和ゲームセンター at 16.0 against TURN.'s 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

TURN. ships an update fortnightly, レトロインベイダー：昭和ゲームセンター weekly. The most recent releases landed on October 26, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | TURN. | レトロインベイダー：昭和ゲームセンター |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | **Weekly** |
| Size | 4 MB | 5 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SHUNJI KUSAKA](https://appshunter.io/developer/1738810004) | [Millegrains Co.,ltd.](https://appshunter.io/developer/6777846099) |

## What reviewers say

### TURN.

[App page](https://appshunter.io/ios/app/turn/id6758433456)

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

**In-app purchases:** none


### レトロインベイダー：昭和ゲームセンター

[App page](https://appshunter.io/ios/app/id6796708053)

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

**In-app purchases:** none


## Frequently asked questions

### Is TURN. free?

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

### Is レトロインベイダー：昭和ゲームセンター free?

レトロインベイダー：昭和ゲームセンター is free to download, with no in-app purchases.

### Do TURN. or レトロインベイダー：昭和ゲームセンター have ads?

Both TURN. and レトロインベイダー：昭和ゲームセンター show ads.

### Which is updated more often, TURN. or レトロインベイダー：昭和ゲームセンター?

TURN. ships an update fortnightly, and レトロインベイダー：昭和ゲームセンター weekly. Most recently, TURN. was updated on October 26, 2026 and レトロインベイダー：昭和ゲームセンター 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.*