# 世界史年号問題 vs ツェラーの公式｜曜日計算機

The clearest difference is in-app purchases: ツェラーの公式｜曜日計算機 at none against 世界史年号問題's 1. 世界史年号問題's advantage is iOS requirement (16.6 vs 26.2). On price, ads and device support there is nothing between them.

Both are free to download. 世界史年号問題 sells 1 one-off in-app purchase. ツェラーの公式｜曜日計算機 asks for nothing beyond the download.

## The numbers

| Metric | 世界史年号問題 | ツェラーの公式｜曜日計算機 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 82.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | — |
| Size | 15 MB | 6 MB |
| Requires iOS | **16.6** | 26.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Akira Fujisawa](https://appshunter.io/developer/1533514621) | [Kenji Yanase](https://appshunter.io/developer/1865920313) |

## What reviewers say

### 世界史年号問題

[App page](https://appshunter.io/ios/app/id1591797286)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告非表示 | $4.99 | one-time |


### ツェラーの公式｜曜日計算機

[App page](https://appshunter.io/ios/app/id6775117486)

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

**In-app purchases:** none


## Frequently asked questions

### Is 世界史年号問題 free?

世界史年号問題 is free to download, with in-app purchases available.

### Is ツェラーの公式｜曜日計算機 free?

ツェラーの公式｜曜日計算機 is free to download, with no in-app purchases.

### Do 世界史年号問題 or ツェラーの公式｜曜日計算機 have ads?

Both 世界史年号問題 and ツェラーの公式｜曜日計算機 show 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.*