# Ostrakon vs Japonské dny

The clearest difference is device support: Ostrakon at 3 against Japonské dny's 1. Ostrakon also leads on iOS requirement (14.1 vs 16.0). On price, ads and in-app purchases there is nothing between them.

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

## The numbers

| Metric | Ostrakon | Japonské dny |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 9 days |
| Size | 50 MB | 26 MB |
| Requires iOS | **14.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Brnensti otaku, z.s.](https://appshunter.io/developer/1383812325) | [Česko-japonské kulturní centrum, z.s.](https://appshunter.io/developer/6802761558) |

## What reviewers say

### Ostrakon

[App page](https://appshunter.io/ios/app/ostrakon/id6748848680)

**Features:** macOS Compatibility

**In-app purchases:** none


### Japonské dny

[App page](https://appshunter.io/ios/app/japonske-dny/id6802761106)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Ostrakon free?

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

### Is Japonské dny free?

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

### Do Ostrakon or Japonské dny have ads?

Neither Ostrakon nor Japonské dny shows ads.

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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.*