# 플라이북 FLYBOOK vs xrayer

The clearest difference is in-app purchases: xrayer at none against 플라이북 FLYBOOK's 1. 플라이북 FLYBOOK's advantage is iOS requirement (13.0 vs 15.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 플라이북 FLYBOOK sells 1 in-app purchase, starting at $9.99 per year. xrayer asks for nothing beyond the download.

플라이북 FLYBOOK ships an update fortnightly, xrayer weekly. The most recent releases landed on October 12, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | 플라이북 FLYBOOK | xrayer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (7 ratings)](https://appshunter.io/ios/app/flybook/id912304218/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 96.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 105 MB | 38 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Flybook](https://appshunter.io/developer/912304221) | [hanjo yu](https://appshunter.io/developer/1813038492) |

## What reviewers say

### 플라이북 FLYBOOK

[App page](https://appshunter.io/ios/app/flybook/id912304218)

This app helps you build a reading habit by connecting you with others. It encourages small, consistent efforts and provides personalized book recommendations. Track your progress and gain confidence as you read.

**Highlights:** Build reading habits, Social reading community, Personalized book recommendations, Track reading progress, Daily reading encouragement, AI book suggestions

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 플라이북 플러스 1년 | $9.99 | per year |


### xrayer

[App page](https://appshunter.io/ios/app/xrayer/id6758456637)

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

**In-app purchases:** none


## Frequently asked questions

### Is 플라이북 FLYBOOK free?

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

### Is xrayer free?

xrayer is free to download, with no in-app purchases.

### Do 플라이북 FLYBOOK or xrayer have ads?

Neither 플라이북 FLYBOOK nor xrayer shows ads.

### Which is updated more often, 플라이북 FLYBOOK or xrayer?

플라이북 FLYBOOK ships an update fortnightly, and xrayer weekly. Most recently, 플라이북 FLYBOOK was updated on October 12, 2026 and xrayer on September 27, 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.*