# 昭和レトロ雑学クイズ vs Dr.脳トレ

The clearest difference is iOS requirement: 昭和レトロ雑学クイズ at 13.0 against Dr.脳トレ's 15.0. On price, ads, in-app purchases and device support there is nothing between them.

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

## The numbers

| Metric | 昭和レトロ雑学クイズ | Dr.脳トレ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Size | 30 MB | 10 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [SATO TOMOMITUS](https://appshunter.io/developer/1615336235) | [CMSite Inc.](https://appshunter.io/developer/382777427) |

## What reviewers say

### 昭和レトロ雑学クイズ

[App page](https://appshunter.io/ios/app/id6796717967)

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

**In-app purchases:** none


### Dr.脳トレ

[App page](https://appshunter.io/ios/app/dr/id6806799015)

**In-app purchases:** none


## Frequently asked questions

### Is 昭和レトロ雑学クイズ free?

昭和レトロ雑学クイズ is free to download, with no in-app purchases.

### Is Dr.脳トレ free?

Dr.脳トレ is free to download, with no in-app purchases.

### Do 昭和レトロ雑学クイズ or Dr.脳トレ have ads?

Both 昭和レトロ雑学クイズ and Dr.脳トレ show 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.*