# 倫理の王様 vs OMU+

The clearest difference is in-app purchases: OMU+ at none against 倫理の王様's 3. OMU+ also leads on ads (none vs shown) and update cadence (every 2 weeks vs every 5 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 倫理の王様 sells 3 in-app purchases, starting at $3.49 per month. OMU+ asks for nothing beyond the download.

倫理の王様 ships an update every 5 weeks, OMU+ every 2 weeks. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 倫理の王様 | OMU+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/and/id1547955470/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 70.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 138 MB | 98 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [HANAUTA INC.](https://appshunter.io/developer/492009717) | [UNIVERSITY PUBLIC CORPORATION OSAKA](https://appshunter.io/developer/1658230942) |

## What reviewers say

### 倫理の王様

[App page](https://appshunter.io/ios/app/and/id1547955470)

This app offers a fun, quiz-like approach to learning ethics for high school students. It features over 1500 questions in various formats, designed for efficient memorization and exam preparation. Play sessions are short, making it suitable for quick study sessions.

**Highlights:** Over 1500 ethics questions, Q/A and multiple-choice formats, Short play sessions for quick study, Game-like progression with stages, Rewards for clearing quests, Adheres to high school guidelines

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 特訓プラン | $3.49 | per month |
| 特訓プラン | $16.99 | per 6 months |
| 特訓プラン | $26.99 | per year |


### OMU+

[App page](https://appshunter.io/ios/app/omu-plus/id6751411978)

**In-app purchases:** none


## Frequently asked questions

### Is 倫理の王様 free?

倫理の王様 is free to download, with in-app purchases available.

### Is OMU+ free?

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

### Do 倫理の王様 or OMU+ have ads?

倫理の王様 shows ads; OMU+ does not.

### Which is updated more often, 倫理の王様 or OMU+?

倫理の王様 ships an update every 5 weeks, and OMU+ every 2 weeks. Most recently, 倫理の王様 was updated on October 24, 2026 and OMU+ on October 28, 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.*