# 20の質問 vs 星空とおじいさん

The clearest difference is in-app purchases: 星空とおじいさん at none against 20の質問's 1. 星空とおじいさん also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.1). On price and device support there is nothing between them.

Both are free to download. 20の質問 sells 1 in-app purchase, starting at $1.99 per month. 星空とおじいさん asks for nothing beyond the download.

## The numbers

| Metric | 20の質問 | 星空とおじいさん |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | — |
| Size | 47 MB | 246 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Monello LLC](https://appshunter.io/developer/1800115800) | [runato sakano](https://appshunter.io/developer/1826252641) |

## What reviewers say

### 20の質問

[App page](https://appshunter.io/ios/app/20/id6742810917)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 無制限パス | $1.99 | per month |


### 星空とおじいさん

[App page](https://appshunter.io/ios/app/id6748552172)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 20の質問 free?

20の質問 is free to download, with in-app purchases available.

### Is 星空とおじいさん free?

星空とおじいさん is free to download, with no in-app purchases.

### Do 20の質問 or 星空とおじいさん have ads?

20の質問 shows ads; 星空とおじいさん does not.

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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.*