# 四字熟語の暗記・反復学習｜エビ四 vs Leaplingo

The clearest difference is iOS requirement: Leaplingo at 13.0 against 四字熟語の暗記・反復学習｜エビ四's 15.6. On price, update cadence, ads and in-app purchases 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 and Leaplingo sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

四字熟語の暗記・反復学習｜エビ四 ships an update every 2 months, Leaplingo every 6 weeks. The most recent releases landed on September 22, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | 四字熟語の暗記・反復学習｜エビ四 | Leaplingo |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Ad-supported | — |
| Size | 13 MB | 143 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [keiji imamura](https://appshunter.io/developer/1496803101) | [free studio Inc.](https://appshunter.io/developer/1765620596) |

## What reviewers say

### 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 |


### Leaplingo

[App page](https://appshunter.io/ios/app/leaplingo/id6670288722)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Plan 1 month | $4.99 | per month |
| Starter Plan 6 months | $24.99 | per 6 months |
| Starter Plan 1 year | $44.99 | per year |


## Frequently asked questions

### 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.

### Is Leaplingo free?

Leaplingo is free to download, with in-app purchases available.

### Do 四字熟語の暗記・反復学習｜エビ四 or Leaplingo have ads?

Both 四字熟語の暗記・反復学習｜エビ四 and Leaplingo show ads.

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

四字熟語の暗記・反復学習｜エビ四 ships an update every 2 months, and Leaplingo every 6 weeks. Most recently, 四字熟語の暗記・反復学習｜エビ四 was updated on September 22, 2026 and Leaplingo on September 17, 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.*