# 四字熟語クイズで暗記 高校受験・大学受験対策 エビ四2 vs 日本史マスター

The clearest difference is in-app purchases: 日本史マスター at none against 四字熟語クイズで暗記 高校受験・大学受験対策 エビ四2's 10. 日本史マスター also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. 四字熟語クイズで暗記 高校受験・大学受験対策 エビ四2 sells 10 in-app purchases, starting at $2.99 per month. 日本史マスター asks for nothing beyond the download.

四字熟語クイズで暗記 高校受験・大学受験対策 エビ四2 ships an update every 2 weeks, 日本史マスター every 11 days. The most recent releases landed on October 6, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | 四字熟語クイズで暗記 高校受験・大学受験対策 エビ四2 | 日本史マスター |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 11 days** |
| Size | 225 MB | 9 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [keiji imamura](https://appshunter.io/developer/1496803101) | [ma zhe](https://appshunter.io/developer/1037212370) |

## What reviewers say

### 四字熟語クイズで暗記 高校受験・大学受験対策 エビ四2

[App page](https://appshunter.io/ios/app/2/id6503683909)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| エビ四2 サブスクリプション/月 | $2.99 | per month |
| 四字熟語 中級 コース | $0.99 | one-time |
| 漢字 初級 コース | $0.99 | one-time |
| 漢字 上級 コース | $0.99 | one-time |
| 熟語帳登録+10 | $0.99 | one-time |
| 四字熟語3コースセット | $1.99 | one-time |
| 漢字3コースセット | $1.99 | one-time |
| 殿堂入り個別リセット | $1.99 | one-time |
| 熟語帳登録+30 | $1.99 | one-time |
| 熟語帳登録+50 | $2.99 | one-time |


### 日本史マスター

[App page](https://appshunter.io/ios/app/id6761674842)

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

**In-app purchases:** none


## Frequently asked questions

### Is 四字熟語クイズで暗記 高校受験・大学受験対策 エビ四2 free?

四字熟語クイズで暗記 高校受験・大学受験対策 エビ四2 is free to download, with in-app purchases available.

### Is 日本史マスター free?

日本史マスター is free to download, with no in-app purchases.

### Do 四字熟語クイズで暗記 高校受験・大学受験対策 エビ四2 or 日本史マスター have ads?

四字熟語クイズで暗記 高校受験・大学受験対策 エビ四2 shows ads; 日本史マスター does not.

### Which is updated more often, 四字熟語クイズで暗記 高校受験・大学受験対策 エビ四2 or 日本史マスター?

四字熟語クイズで暗記 高校受験・大学受験対策 エビ四2 ships an update every 2 weeks, and 日本史マスター every 11 days. Most recently, 四字熟語クイズで暗記 高校受験・大学受験対策 エビ四2 was updated on October 6, 2026 and 日本史マスター on October 9, 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.*