# 空の青さを知る vs ソリティア日本一周

The clearest difference is ads: 空の青さを知る at none against ソリティア日本一周's shown. ソリティア日本一周's advantage is update cadence (every 5 days vs monthly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

空の青さを知る ships an update monthly, ソリティア日本一周 every 5 days. The most recent releases landed on October 3, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | 空の青さを知る | ソリティア日本一周 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 5 days** |
| Size | 86 MB | 225 MB |
| Requires iOS | 15.5 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [chiaki matsuda](https://appshunter.io/developer/1602664460) | [ERS CO.,LTD.](https://appshunter.io/developer/1096454027) |

## What reviewers say

### 空の青さを知る

[App page](https://appshunter.io/ios/app/id1602664458)

**Features:** macOS Compatibility

**In-app purchases:** none


### ソリティア日本一周

[App page](https://appshunter.io/ios/app/id6740369345)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 空の青さを知る free?

空の青さを知る is free to download, with no in-app purchases.

### Is ソリティア日本一周 free?

ソリティア日本一周 is free to download, with no in-app purchases.

### Do 空の青さを知る or ソリティア日本一周 have ads?

ソリティア日本一周 shows ads; 空の青さを知る does not.

### Which is updated more often, 空の青さを知る or ソリティア日本一周?

空の青さを知る ships an update monthly, and ソリティア日本一周 every 5 days. Most recently, 空の青さを知る was updated on October 3, 2026 and ソリティア日本一周 on October 2, 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.*