# Sixfast vs SMFK

The clearest difference is in-app purchases: SMFK at none against Sixfast's 28. SMFK also leads on iOS requirement (13.0 vs 15.0). Sixfast's advantage is device support. On price there is nothing between them.

Both are free to download. Sixfast sells 19 in-app purchases, starting at $5.99 per month. SMFK asks for nothing beyond the download.

## The numbers

| Metric | Sixfast | SMFK |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (223 ratings)](https://appshunter.io/ios/app/sixfast/id1511888409/reviews)** | — |
| Number of ratings | **223** | — |
| Positive reviews | 76.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | — |
| Update frequency | Every 3 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 156 MB | 18 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod, Mac** | — |
| Age rating | 4+ | 17+ |
| Developer | [Chengdu Chaoyoumao Technology Co.,Ltd](https://appshunter.io/developer/1539126185) | [Shanghai Techsun Anti-counterfeiting Technology Holding Co., Ltd.](https://appshunter.io/developer/451910700) |

## 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 (19)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SVIP连续包月 | $5.99 | per month |
| VIP连续包月 | $6.99 | per month |
| VIP会员-连续包月 | $7.49 | per month |
| VIP会员-连续包月套餐 | $7.49 | per month |
| 日常VIP连续包月 | $7.49 | per month |
| VIP包月套餐 | $7.49 | per month |
| VIP连续包月 | $7.79 | per month |
| VIP连续包月 | $7.99 | per month |
| SVIP连续包月 | $9.99 | per month |
| SVIP免费30天 | $9.99 | per month |
| SVIP连续包月 | $11.99 | per month |
| SVIP免费30天 | $11.99 | per month |
| SVIP连续包月 | $12.49 | per month |
| 日常SVIP连续包月 | $12.49 | per month |
| SVIP连续包月 | $12.49 | per month |
| SVIP连续包月 | $12.99 | per month |
| VIP月卡 | $7.99 | one-time |
| VIP会员-月卡 | $8.99 | one-time |
| VIP双月卡 | $14.99 | 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


### SMFK

[App page](https://appshunter.io/ios/app/smfk/id6449069886)

**In-app purchases:** none


## Frequently asked questions

### Is Sixfast free?

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

### Is SMFK free?

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

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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.*