# 四化飞星 vs 666书友会国际版

The clearest difference is price: 666书友会国际版 at Free against 四化飞星's $59.99. 666书友会国际版 also leads on iOS requirement (13.0 vs 15). 四化飞星's advantage is in-app purchases (none vs 9) and ads (none vs shown). On update cadence and device support there is nothing between them.

666书友会国际版 is free to download; 四化飞星 costs $59.99 up front. 666书友会国际版 sells 9 one-off in-app purchases. 四化飞星 asks for nothing beyond the download.

四化飞星 ships an update every 5 weeks, 666书友会国际版 every 2 months. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | 四化飞星 | 666书友会国际版 |
| --- | --- | --- |
| Price | $59.99 | **Free** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Size | 10 MB | 71 MB |
| Requires iOS | 15 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Hoong Wei Chin](https://appshunter.io/developer/1249621265) | [Hainan Huidu Technology Co.,Ltd.](https://appshunter.io/developer/1655263750) |

## What reviewers say

### 四化飞星

[App page](https://appshunter.io/ios/app/id1249621266)

**Features:** Vision Pro support

**In-app purchases:** none


### 666书友会国际版

[App page](https://appshunter.io/ios/app/666/id6478449744)

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1书豆 | $1.49 | one-time |
| 1.5书豆 | $2.19 | one-time |
| 4.5书豆 | $6.49 | one-time |
| 9.5书豆 | $13.90 | one-time |
| 28书豆 | $40.00 | one-time |
| 56书豆 | $80.00 | one-time |
| 95书豆 | $136.99 | one-time |
| 143书豆 | $204.99 | one-time |
| 553书豆 | $790.00 | one-time |


## Frequently asked questions

### Is 四化飞星 free?

四化飞星 costs $59.99, with no in-app purchases.

### Is 666书友会国际版 free?

666书友会国际版 is free to download, with in-app purchases available.

### Do 四化飞星 or 666书友会国际版 have ads?

666书友会国际版 shows ads; 四化飞星 does not.

### Which is updated more often, 四化飞星 or 666书友会国际版?

四化飞星 ships an update every 5 weeks, and 666书友会国际版 every 2 months. Most recently, 四化飞星 was updated on November 2, 2026 and 666书友会国际版 on November 4, 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.*