# 共通テスト対応英単語1800 vs 化学の王様

The clearest difference is in-app purchases: 共通テスト対応英単語1800 at none against 化学の王様's 3. 共通テスト対応英単語1800 also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.0). 化学の王様's advantage is update cadence (every 3 weeks vs every 18 months). On price, review sentiment 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. 共通テスト対応英単語1800 asks for nothing beyond the download.

共通テスト対応英単語1800 ships an update every 18 months, 化学の王様 every 3 weeks. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | 共通テスト対応英単語1800 | 化学の王様 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/id1519715518/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | **46.0% of reviews** | 42.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 18 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 156 MB | 139 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [株式会社ナガセ](https://appshunter.io/developer/447743163) | [HANAUTA INC.](https://appshunter.io/developer/492009717) |

## What reviewers say

### 共通テスト対応英単語1800

[App page](https://appshunter.io/ios/app/1800/id785904625)

Master essential English vocabulary for university entrance exams with this dedicated app. It covers 99.5% of the vocabulary tested on the Center Test and other university entrance exams, focusing on the 1800 most crucial words for high school students.

**Highlights:** Covers 99.5% of Center Test vocabulary, Focuses on 1800 essential words, Based on successful exam preparation methods, Designed for high school and university exam students, Master vocabulary quickly and completely

**Features:** Vision Pro support

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is 共通テスト対応英単語1800 free?

共通テスト対応英単語1800 is free to download, with no in-app purchases.

### Is 化学の王様 free?

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

### Do 共通テスト対応英単語1800 or 化学の王様 have ads?

化学の王様 shows ads; 共通テスト対応英単語1800 does not.

### Which is updated more often, 共通テスト対応英単語1800 or 化学の王様?

共通テスト対応英単語1800 ships an update every 18 months, and 化学の王様 every 3 weeks. Most recently, 共通テスト対応英単語1800 was updated on November 6, 2026 and 化学の王様 on November 7, 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.*