# 원서읽는 리도보카 vs 붐클래스(boom class)

The clearest difference is in-app purchases: 붐클래스(boom class) at none against 원서읽는 리도보카's 3. 원서읽는 리도보카's advantage is update cadence (every 6 weeks vs every 20 months) and iOS requirement (13.0 vs 15.5). On price, ads and device support there is nothing between them.

Both are free to download. 원서읽는 리도보카 sells 3 one-off in-app purchases. 붐클래스(boom class) asks for nothing beyond the download.

원서읽는 리도보카 ships an update every 6 weeks, 붐클래스(boom class) every 20 months. The most recent releases landed on October 12, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | 원서읽는 리도보카 | 붐클래스(boom class) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/id1470191217/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 45.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 20 months |
| Monetization | Free with in-app purchases | — |
| Size | 85 MB | 91 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jisik Corp.](https://appshunter.io/developer/1550050116) | [I Waz Co.,Ltd](https://appshunter.io/developer/1629816087) |

## What reviewers say

### 원서읽는 리도보카

[App page](https://appshunter.io/ios/app/id1470191217)

This app offers unlimited vocabulary learning for over 7,000 original English books. It extracts core words from popular series and bestsellers, presenting them in the order they appear in the text. Learn vocabulary visually without direct translation for faster reading comprehension.

**Highlights:** Unlimited vocabulary learning, 7,000+ original English books, Words extracted from popular series, Visual learning aids, Vocabulary in book order, Shadowing service for pronunciation

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 마케터쿠폰 100장 | $7.99 | one-time |
| 1년 자유이용쿠폰 | $48.99 | one-time |
| 2년 자유이용쿠폰 | $99.99 | one-time |


### 붐클래스(boom class)

[App page](https://appshunter.io/ios/app/boom-class/id1629816085)

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

**In-app purchases:** none


## Frequently asked questions

### Is 원서읽는 리도보카 free?

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

### Is 붐클래스(boom class) free?

붐클래스(boom class) is free to download, with no in-app purchases.

### Do 원서읽는 리도보카 or 붐클래스(boom class) have ads?

Neither 원서읽는 리도보카 nor 붐클래스(boom class) shows ads.

### Which is updated more often, 원서읽는 리도보카 or 붐클래스(boom class)?

원서읽는 리도보카 ships an update every 6 weeks, and 붐클래스(boom class) every 20 months. Most recently, 원서읽는 리도보카 was updated on October 12, 2026 and 붐클래스(boom class) on October 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.*