# 共通テスト対応英単語1800 vs 無機化学

The clearest difference is review sentiment: 無機化学 at 98% against 共通テスト対応英単語1800's 46%. 無機化学 also leads on update cadence (every 3 days vs every 18 months). 共通テスト対応英単語1800's advantage is iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

共通テスト対応英単語1800 ships an update every 18 months, 無機化学 every 3 days. Both last shipped on November 11, 2026.

## The numbers

| Metric | 共通テスト対応英単語1800 | 無機化学 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/id1351078183/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 46.0% of reviews | **98.1% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 3 days** |
| Monetization | Free | — |
| Size | 156 MB | 42 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [株式会社ナガセ](https://appshunter.io/developer/447743163) | [Hideki Touhara](https://appshunter.io/developer/1268738829) |

## 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


### 無機化学

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

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

**In-app purchases:** none


## 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 無機化学 free?

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

### Do 共通テスト対応英単語1800 or 無機化学 have ads?

Neither 共通テスト対応英単語1800 nor 無機化学 shows ads.

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

共通テスト対応英単語1800 ships an update every 18 months, and 無機化学 every 3 days. Most recently, 共通テスト対応英単語1800 was updated on November 11, 2026 and 無機化学 on November 11, 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.*