# 孫正義名言 vs 四字熟語の暗記・反復学習｜エビ四

The clearest difference is in-app purchases: 孫正義名言 at none against 四字熟語の暗記・反復学習｜エビ四's 1. 孫正義名言 also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.6). 四字熟語の暗記・反復学習｜エビ四's advantage is update cadence (every 2 months vs every 14 months). On price and device support there is nothing between them.

Both are free to download. 四字熟語の暗記・反復学習｜エビ四 sells 1 one-off in-app purchase. 孫正義名言 asks for nothing beyond the download.

孫正義名言 ships an update every 14 months, 四字熟語の暗記・反復学習｜エビ四 every 2 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 孫正義名言 | 四字熟語の暗記・反復学習｜エビ四 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 14 months | **Every 2 months** |
| Monetization | — | Ad-supported |
| Size | 24 MB | 13 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [YouTeacher Inc.](https://appshunter.io/developer/423093933) | [keiji imamura](https://appshunter.io/developer/1496803101) |

## What reviewers say

### 孫正義名言

[App page](https://appshunter.io/ios/app/masayoshi-son-quotes/id524941007)

**Features:** macOS Compatibility

**In-app purchases:** none


### 四字熟語の暗記・反復学習｜エビ四

[App page](https://appshunter.io/ios/app/id1504085749)

Learn 1600 Japanese four-character idioms through engaging quizzes and a spaced repetition system. This app helps improve vocabulary and prepare for exams and general knowledge tests, incorporating proverbs and idiomatic expressions.

**Highlights:** 1600 four-character idioms included, Spaced repetition algorithm, Game-like learning, Simple and intuitive interface, Randomized quiz questions, Progress tracking for mastery

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告非表示 | $2.99 | one-time |


## Frequently asked questions

### Is 孫正義名言 free?

孫正義名言 is free to download, with no in-app purchases.

### Is 四字熟語の暗記・反復学習｜エビ四 free?

四字熟語の暗記・反復学習｜エビ四 is free to download, with in-app purchases available.

### Do 孫正義名言 or 四字熟語の暗記・反復学習｜エビ四 have ads?

四字熟語の暗記・反復学習｜エビ四 shows ads; 孫正義名言 does not.

### Which is updated more often, 孫正義名言 or 四字熟語の暗記・反復学習｜エビ四?

孫正義名言 ships an update every 14 months, and 四字熟語の暗記・反復学習｜エビ四 every 2 months. Most recently, 孫正義名言 was updated on October 29, 2026 and 四字熟語の暗記・反復学習｜エビ四 on October 24, 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.*