# 英熟語センター750 vs 無機化学

The clearest difference is review sentiment: 無機化学 at 98% against 英熟語センター750's 35%. 無機化学 also leads on update cadence (every 2 days vs every 7 months). 英熟語センター750's advantage is iOS requirement (7.0 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.

英熟語センター750 ships an update every 7 months, 無機化学 every 2 days. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | 英熟語センター750 | 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 | 35.0% of reviews | **98.1% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 days** |
| Monetization | Free | — |
| Size | 104 MB | 42 MB |
| Requires iOS | **7.0** | 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

### 英熟語センター750

[App page](https://appshunter.io/ios/app/750/id499224982)

This app helps high school students master essential English idioms for university entrance exams. It focuses on 750 frequently appearing idioms, ordered by frequency, with features for focused learning and audio review.

**Highlights:** 750 essential idioms, Ordered by exam frequency, Focused learning on unknown idioms, Audio learning for pronunciation and review, Progress tracking

**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 英熟語センター750 free?

英熟語センター750 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 英熟語センター750 or 無機化学 have ads?

Neither 英熟語センター750 nor 無機化学 shows ads.

### Which is updated more often, 英熟語センター750 or 無機化学?

英熟語センター750 ships an update every 7 months, and 無機化学 every 2 days. Most recently, 英熟語センター750 was updated on November 1, 2026 and 無機化学 on November 6, 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.*