# Unknown vs 頭の回転を早くする！Line

The clearest difference is price: 頭の回転を早くする！Line at Free against Unknown's $2.99. Unknown's advantage is chart position (#191 vs unranked) and device support. On in-app purchases and iOS requirement there is nothing between them.

頭の回転を早くする！Line is free to download; Unknown costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Unknown | 頭の回転を早くする！Line |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.9 (8 ratings)](https://appshunter.io/ios/app/unknown-raven-field/id6670360708/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 6 months | — |
| Monetization | Paid | — |
| Best chart rank | **#191** | — |
| Size | 90 MB | 109 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPod, Mac** | — |
| Age rating | 12+ | 4+ |
| Developer | [Taegyu Kim](https://appshunter.io/developer/1722870553) | [Hayato Saito](https://appshunter.io/developer/1865824244) |

## What reviewers say

### Unknown

[App page](https://appshunter.io/ios/app/unknown-raven-field/id6670360708)

**Currently charting:** #191 Top Paid · Puzzle (US App Store)

Embark on a mystery adventure as Sophia searches for her missing brother in the eerie village of Ravenfield. Uncover dark secrets, solve puzzles, and interact with townsfolk to reveal a hidden family past.

**Highlights:** Engrossing storyline, Puzzles and riddles, Townsfolk interactions, Chilling game environment, Clue discovery

**In-app purchases:** none


### 頭の回転を早くする！Line

[App page](https://appshunter.io/ios/app/line/id6757463589)

**In-app purchases:** none


## Frequently asked questions

### Is Unknown free?

Unknown costs $2.99, with no in-app purchases.

### Is 頭の回転を早くする！Line free?

頭の回転を早くする！Line is free to download, with no in-app purchases.

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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.*