# 化学の王様 vs 改 理解を深める 核心古文単語351

The clearest difference is in-app purchases: 改 理解を深める 核心古文単語351 at none against 化学の王様's 3. 改 理解を深める 核心古文単語351 also leads on ads (none vs shown) and update cadence (every 3 days vs every 3 weeks). On price and device support there is nothing between them.

Both are free to download. 化学の王様 sells 3 in-app purchases, starting at $3.49 per month. 改 理解を深める 核心古文単語351 asks for nothing beyond the download.

化学の王様 ships an update every 3 weeks, 改 理解を深める 核心古文単語351 every 3 days. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 化学の王様 | 改 理解を深める 核心古文単語351 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/id1519715518/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 42.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 139 MB | 22 MB |
| Requires iOS | 15.0 | **10.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [HANAUTA INC.](https://appshunter.io/developer/492009717) | [SYOBUN SHUPPAN CO.LTD.](https://appshunter.io/developer/1224576325) |

## What reviewers say

### 化学の王様

[App page](https://appshunter.io/ios/app/id1519715518)

This app offers a fun, quiz-like approach to learning high school chemistry. It features over 3000 questions in various formats and is designed to help users memorize key concepts for exams. Users can progress through stages and earn rewards while studying.

**Highlights:** Over 3000 chemistry questions, Quiz-like learning format, Short play sessions, Exam preparation content, Game-like progression, Gift rewards for quests

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 合格プラン | $3.49 | per month |
| 合格プラン | $17.49 | per 6 months |
| 合格プラン | $27.99 | per year |


### 改 理解を深める 核心古文単語351

[App page](https://appshunter.io/ios/app/351/id6444208641)

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

**In-app purchases:** none


## Frequently asked questions

### Is 化学の王様 free?

化学の王様 is free to download, with in-app purchases available.

### Is 改 理解を深める 核心古文単語351 free?

改 理解を深める 核心古文単語351 is free to download, with no in-app purchases.

### Do 化学の王様 or 改 理解を深める 核心古文単語351 have ads?

化学の王様 shows ads; 改 理解を深める 核心古文単語351 does not.

### Which is updated more often, 化学の王様 or 改 理解を深める 核心古文単語351?

化学の王様 ships an update every 3 weeks, and 改 理解を深める 核心古文単語351 every 3 days. Most recently, 化学の王様 was updated on October 29, 2026 and 改 理解を深める 核心古文単語351 on October 27, 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.*