# 空の青さを知る vs accident

The clearest difference is update cadence: 空の青さを知る at monthly against accident's every 41 months. 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.

空の青さを知る ships an update monthly, accident every 41 months. The most recent releases landed on October 3, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | 空の青さを知る | accident |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 41 months |
| Size | 86 MB | 184 MB |
| Requires iOS | 15.5 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 9+ | 12+ |
| Developer | [chiaki matsuda](https://appshunter.io/developer/1602664460) | [Dream Jack Inc.](https://appshunter.io/developer/862264572) |

## 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


### accident

[App page](https://appshunter.io/ios/app/accident/id6444255199)

**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 accident free?

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

### Do 空の青さを知る or accident have ads?

Neither 空の青さを知る nor accident shows ads.

### Which is updated more often, 空の青さを知る or accident?

空の青さを知る ships an update monthly, and accident every 41 months. Most recently, 空の青さを知る was updated on October 3, 2026 and accident on September 29, 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.*