# TOEIC上級英単語1500 vs 無機化学

The clearest difference is review sentiment: 無機化学 at 86% against TOEIC上級英単語1500's 50%. 無機化学 also leads on update cadence (every 2 months vs every 5 months). TOEIC上級英単語1500's advantage is in-app purchases (none vs 3) and iOS requirement (6.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. 無機化学 sells 3 in-app purchases, starting at $1.99 per month. TOEIC上級英単語1500 asks for nothing beyond the download.

TOEIC上級英単語1500 ships an update every 5 months, 無機化学 every 2 months. The most recent releases landed on October 9, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | TOEIC上級英単語1500 | 無機化学 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | **86.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | **Free** | Freemium |
| Size | 101 MB | 8 MB |
| Requires iOS | **6.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [株式会社ナガセ](https://appshunter.io/developer/447743163) | [Akihiko Kitamura](https://appshunter.io/developer/1585792497) |

## What reviewers say

### TOEIC上級英単語1500

[App page](https://appshunter.io/ios/app/toeic1500/id982904558)

This app offers a curated selection of advanced English vocabulary words frequently appearing on the TOEIC test. It is exclusively for students of Toshin Business School, with some introductory content available for general users.

**Highlights:** Curated advanced TOEIC vocabulary, Focus on frequently tested words, Exclusive content for Toshin Business School students, Introductory content for general users

**Features:** Vision Pro support

**In-app purchases:** none


### 無機化学

[App page](https://appshunter.io/ios/app/id6737172145)

This app helps high school students memorize inorganic chemistry concepts. It covers reaction principles, metallic elements, and non-metallic elements, utilizing a red-sheet overlay for easy output and review. User feedback is actively incorporated for improvements.

**Highlights:** Red sheet overlay for output practice, Comprehensive inorganic chemistry content, Covers reaction principles, Covers metallic elements, Covers non-metallic elements, User feedback integration

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro - 1ヶ月 | $1.99 | per month |
| Pro - 6ヶ月 | $11.99 | per 6 months |
| Pro - 12ヶ月 | $19.99 | per year |


## Frequently asked questions

### Is TOEIC上級英単語1500 free?

TOEIC上級英単語1500 is free to download, with no in-app purchases.

### Is 無機化学 free?

無機化学 is free to download, with in-app purchases available.

### Do TOEIC上級英単語1500 or 無機化学 have ads?

Neither TOEIC上級英単語1500 nor 無機化学 shows ads.

### Which is updated more often, TOEIC上級英単語1500 or 無機化学?

TOEIC上級英単語1500 ships an update every 5 months, and 無機化学 every 2 months. Most recently, TOEIC上級英単語1500 was updated on October 9, 2026 and 無機化学 on October 23, 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.*