# 無機化学 vs 生物の王様

無機化学 and 生物の王様 both sit at 5.0 stars, but that hides the real split: 98% of 無機化学's written reviews are positive against 59% of 生物の王様's. 無機化学 also leads on in-app purchases (none vs 3) and ads (none vs shown). On price, rating, ratings volume and device support there is nothing between them.

Both are free to download. 生物の王様 sells 3 in-app purchases, starting at $3.49 per month. 無機化学 asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for 無機化学 against 5.0 for 生物の王様. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews are what separate them: 98% of 無機化学's written reviews are positive against 59% of 生物の王様's.

無機化学 ships an update every 2 days, 生物の王様 monthly. Both last shipped on October 29, 2026.

## The numbers

| Metric | 無機化学 | 生物の王様 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/id1351078183/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/and/id1546687700/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | **98.1% of reviews** | 58.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Monthly |
| Monetization | — | Free with in-app purchases |
| Size | 40 MB | 140 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hideki Touhara](https://appshunter.io/developer/1268738829) | [HANAUTA INC.](https://appshunter.io/developer/492009717) |

## What reviewers say

### 無機化学

[App page](https://appshunter.io/ios/app/id1351078183)

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

**In-app purchases:** none


### 生物の王様

[App page](https://appshunter.io/ios/app/and/id1546687700)

This app offers a fun, quiz-like approach to learning biology, covering high school curriculum and exam preparation. It features over 3000 questions in various formats and allows users to progress through stages with rewards.

**Highlights:** Over 3000 biology questions, Quiz 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 |


## Frequently asked questions

### Is 無機化学 free?

無機化学 is free to download, with no in-app purchases.

### Is 生物の王様 free?

生物の王様 is free to download, with in-app purchases available.

### Which has better reviews, 無機化学 or 生物の王様?

無機化学 and 生物の王様 are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do 無機化学 or 生物の王様 have ads?

生物の王様 shows ads; 無機化学 does not.

### Which is updated more often, 無機化学 or 生物の王様?

無機化学 ships an update every 2 days, and 生物の王様 monthly. Most recently, 無機化学 was updated on October 29, 2026 and 生物の王様 on October 29, 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.*