# Sixfast vs 空空鱼

The clearest difference is rating: 空空鱼 at 5.0 against Sixfast's 4.4. 空空鱼 also leads on iOS requirement (13.0 vs 15.0). Sixfast's advantage is ratings volume (240 vs 3) and device support (4 vs 2). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Sixfast sells 7 in-app purchases, starting at $6.99 per month and 空空鱼 sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

空空鱼 holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Sixfast has 240 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 76% of Sixfast's written reviews are positive against 81% of 空空鱼's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 11, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Sixfast | 空空鱼 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (240 ratings)](https://appshunter.io/ios/app/sixfast/id1511888409/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/id6502636164/reviews)** |
| Number of ratings | **240** | 3 |
| Positive reviews | 76.4% of reviews | **81.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 160 MB | 102 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Chengdu Chaoyoumao Technology Co.,Ltd](https://appshunter.io/developer/1539126185) | [Hebei Heiya Technology Co., Ltd.](https://appshunter.io/developer/1513117911) |

## What reviewers say

### Sixfast

[App page](https://appshunter.io/ios/app/sixfast/id1511888409)

This app provides professional network acceleration for overseas Chinese, students, and workers. It resolves high latency issues when accessing domestic Chinese networks, ensuring smooth streaming, music listening, and gaming experiences.

**Highlights:** Accelerate domestic video platforms, Stream music and live content, Dedicated lines for Chinese game servers, Multi-device compatibility, Smart traffic routing, Low latency for popular games

**Features:** Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP连续包月 | $6.99 | per month |
| VIP包月套餐 | $7.49 | per month |
| VIP连续包月 | $7.79 | per month |
| SVIP连续包月 | $11.99 | per month |
| SVIP连续包月 | $12.49 | per month |
| VIP月卡 | $7.99 | one-time |
| SVIP月卡 | $12.99 | one-time |

**What reviewers like**

- 🚀 Fast and stable connection
- 👍 Solves region restrictions
- 🎮 Improves gaming performance
- 📺 Enables access to domestic content
- 🎵 Unblocks music streaming

**What reviewers complain about**

- 📉 Increased latency for some users
- 💸 Expensive pricing
- ❌ Inconsistent performance
- 🚫 Not working for certain games/apps
- ⚠️ Login issues

**Reported bugs**

- Cannot connect on mobile
- Slow internet speed after connection
- Game acceleration not working after updates
- Login failures with WeChat
- Subscription not recognized

**Requested features**

- Add more supported games/apps
- Improve desktop client functionality
- Offer more flexible pricing options
- Increase server stability in certain regions
- Add landscape mode support


### 空空鱼

[App page](https://appshunter.io/ios/app/id6502636164)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 首充送100泡泡币 | $0.99 | one-time |
| 30泡泡币 | $0.99 | one-time |
| 一个月会员 | $0.99 | one-time |
| 90泡泡币 | $0.99 | one-time |
| 160泡泡币 | $0.99 | one-time |
| 270个泡泡币 | $1.99 | one-time |
| VIP季度会员 | $1.99 | one-time |
| 480个泡泡币 | $2.99 | one-time |
| SVIP会员 | $3.99 | one-time |
| 1100个泡泡币 | $5.99 | one-time |


## Frequently asked questions

### Is Sixfast free?

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

### Is 空空鱼 free?

空空鱼 is free to download, with in-app purchases available.

### Which has better reviews, Sixfast or 空空鱼?

空空鱼 is rated higher. Sixfast averages 4.4 out of 5 from 240 ratings, while 空空鱼 averages 5.0 from 3 ratings.

### Do Sixfast or 空空鱼 have ads?

Neither Sixfast nor 空空鱼 shows ads.

### Which is updated more often, Sixfast or 空空鱼?

Sixfast ships an update every 3 weeks, and 空空鱼 every 3 weeks. Most recently, Sixfast was updated on November 11, 2026 and 空空鱼 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.*