# えにぐま！"alea iacta est" vs 空の青さを知る

The clearest difference is ads: 空の青さを知る at none against えにぐま！"alea iacta est"'s shown. えにぐま！"alea iacta est"'s advantage is iOS requirement (13.0 vs 15.5). On price, update cadence, 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.

えにぐま！"alea iacta est" ships an update every 6 weeks, 空の青さを知る monthly. The most recent releases landed on October 13, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | えにぐま！"alea iacta est" | 空の青さを知る |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | Ad-supported | — |
| Size | 205 MB | 86 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 9+ |
| Developer | [Masatomo Takano](https://appshunter.io/developer/1479637060) | [chiaki matsuda](https://appshunter.io/developer/1602664460) |

## What reviewers say

### えにぐま！"alea iacta est"

[App page](https://appshunter.io/ios/app/alea-iacta-est/id1526989884)

A solo dice-rolling mini-game derived from a Windows doujin game. Navigate a board, manage your character's remaining life, and engage in conversations to influence the ending. Gameplay is quick, lasting 2-10 minutes per session.

**Highlights:** Dice-rolling gameplay, Character conversations, Multiple endings, Life management, Quick play sessions

**Features:** macOS Compatibility

**In-app purchases:** none


### 空の青さを知る

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is えにぐま！"alea iacta est" free?

えにぐま！"alea iacta est" is free to download, with no in-app purchases.

### 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.

### Do えにぐま！"alea iacta est" or 空の青さを知る have ads?

えにぐま！"alea iacta est" shows ads; 空の青さを知る does not.

### Which is updated more often, えにぐま！"alea iacta est" or 空の青さを知る?

えにぐま！"alea iacta est" ships an update every 6 weeks, and 空の青さを知る monthly. Most recently, えにぐま！"alea iacta est" was updated on October 13, 2026 and 空の青さを知る on October 3, 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.*