# 英単語  by 物書堂 vs シャドーイング Shadog

The clearest difference is update cadence: シャドーイング Shadog at every 11 days against 英単語  by 物書堂's every 2 months. シャドーイング Shadog also leads on review sentiment (70% vs 56%) and iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. 英単語  by 物書堂 sells 30 one-off in-app purchases and シャドーイング Shadog sells 3 in-app purchases, starting at $22.99 per month. Whichever you choose, the download price is not the number that matters.

英単語  by 物書堂 ships an update every 2 months, シャドーイング Shadog every 11 days. The most recent releases landed on September 22, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | 英単語  by 物書堂 | シャドーイング Shadog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (5 ratings)](https://appshunter.io/ios/app/by/id1398954789/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 56.0% of reviews | **70.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 11 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 70 MB | 97 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [物書堂](https://appshunter.io/developer/284350529) | [Shadog LLC](https://appshunter.io/developer/1685605147) |

## What reviewers say

### 英単語  by 物書堂

[App page](https://appshunter.io/ios/app/by/id1398954789)

This app offers a comprehensive vocabulary learning experience with a wide range of popular English word lists. It includes interactive exercises, listening practice, and progress tracking. Users can purchase additional content to expand their learning.

**Highlights:** Interactive vocabulary and definition learning, Memory check with hidden words/definitions, Multiple choice and fill-in-the-blank exercises, Listening practice with adjustable playback, Progress tracking with markers and word lists, Studyplus integration for learning analytics

**Features:** Family Sharing, Apple Watch app

**In-app purchases (30)**

| Purchase | Price | Billing |
| --- | --- | --- |
| チャンクで英単語 Advanced【無料お試し版】 | Free | one-time |
| 英単語ターゲット1900（5訂版） | Free | one-time |
| 金のフレーズ 2 | Free | one-time |
| TOEFL®テスト英単語3800（4訂版） | Free | one-time |
| チャンクで英単語 Basic（第2版）【お試し版】 | Free | one-time |
| チャンクで英単語 Advanced（第2版）【お試し版】 | Free | one-time |
| チャンクで英単語 Standard（第2版）【お試し版】 | Free | one-time |
| 英熟語ターゲット1000（4訂版） | Free | one-time |
| 新TOEIC®テスト英単語・熟語マスタリー2000 | Free | one-time |
| 金のフレーズ 1 | Free | one-time |
| 金のフレーズ 2 | $4.99 | one-time |
| チャンクで英単語 Basic（第2版） | $4.99 | one-time |
| チャンクで英単語 Standard（第2版） | $4.99 | one-time |
| 中学英単語ターゲット1800（4訂版） | $4.99 | one-time |
| 英検® でる順パス単 準2級（5訂版） | $6.99 | one-time |
| 英検® でる順パス単 1級（4訂版） | $6.99 | one-time |
| 英検® でる順パス単 準1級（4訂版） | $6.99 | one-time |
| 英単語ターゲット1900（6訂版） | $6.99 | one-time |
| 英熟語ターゲット1000（5訂版） | $6.99 | one-time |
| 新TOEIC®テスト 英単語・熟語 マスタリー2000 | $6.99 | one-time |
| 英単語ターゲット1200（改訂版） | $6.99 | one-time |
| チャンクで英単語 Advanced（第2版） | $6.99 | one-time |
| 英検® でる順パス単 2級（5訂版） | $7.99 | one-time |
| 英検® でる順パス単 2級（4訂版） | $7.99 | one-time |
| 英単語ターゲット1400（5訂版） | $7.99 | one-time |
| 英検® でる順パス単 準1級（5訂版） | $9.99 | one-time |
| 英検® でる順パス単 1級（5訂版） | $9.99 | one-time |
| 実践IELTS英単語3500（改訂版） | $13.99 | one-time |
| TOEFL®テスト英単語3800（4訂版） | $14.99 | one-time |
| 実践IELTS英単語3500（初版） | $15.99 | one-time |


### シャドーイング Shadog

[App page](https://appshunter.io/ios/app/shadog/id6448691638)

Enhance your English listening skills with AI-powered shadowing. Get instant pronunciation feedback, identify weak spots, and practice with a vast library of materials. Achieve your language goals with personalized, daily practice.

**Highlights:** AI pronunciation feedback, Shadowing practice, Personalized learning paths, Extensive material library (500+ questions), Progress tracking, Daily practice reminders, Weakness-focused script generation

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Shadog | $22.99 | per month |
| Shadog 3ヶ月プラン | $59.99 | per 3 months |
| Shadog 1年プラン | $149.99 | per year |


## Frequently asked questions

### Is 英単語  by 物書堂 free?

英単語  by 物書堂 is free to download, with in-app purchases available.

### Is シャドーイング Shadog free?

シャドーイング Shadog is free to download, with in-app purchases available.

### Do 英単語  by 物書堂 or シャドーイング Shadog have ads?

Neither 英単語  by 物書堂 nor シャドーイング Shadog shows ads.

### Which is updated more often, 英単語  by 物書堂 or シャドーイング Shadog?

英単語  by 物書堂 ships an update every 2 months, and シャドーイング Shadog every 11 days. Most recently, 英単語  by 物書堂 was updated on September 22, 2026 and シャドーイング Shadog on September 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.*