# TemperatureConverterY vs Sixfast

The clearest difference is in-app purchases: TemperatureConverterY at none against Sixfast's 29. TemperatureConverterY also leads on review sentiment (100% vs 76%) and iOS requirement (8.0 vs 15.0). Sixfast's advantage is update cadence (every 3 weeks vs every 7 months). On price, ads and device support there is nothing between them.

Both are free to download. Sixfast sells 20 in-app purchases, starting at $5.99 per month. TemperatureConverterY asks for nothing beyond the download.

TemperatureConverterY ships an update every 7 months, Sixfast every 3 weeks. The most recent releases landed on October 2, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | TemperatureConverterY | Sixfast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (228 ratings)](https://appshunter.io/ios/app/sixfast/id1511888409/reviews)** |
| Number of ratings | — | **228** |
| Positive reviews | **100.0% of reviews** | 76.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 11 MB | 156 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Yoshiaki Onishi](https://appshunter.io/developer/852893746) | [Chengdu Chaoyoumao Technology Co.,Ltd](https://appshunter.io/developer/1539126185) |

## What reviewers say

### TemperatureConverterY

[App page](https://appshunter.io/ios/app/temperatureconvertery/id1139106640)

Easily convert temperatures between Celsius, Fahrenheit, and Kelvin. Simply input your temperature, and the app will automatically display the converted results.

**Highlights:** Temperature conversion, Celsius support, Fahrenheit support, Kelvin support, Automatic calculation

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

**In-app purchases:** none


### 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 (20)**

| 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 |
| SVIP月卡 | $12.99 | 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


## Frequently asked questions

### Is TemperatureConverterY free?

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

### Is Sixfast free?

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

### Do TemperatureConverterY or Sixfast have ads?

Neither TemperatureConverterY nor Sixfast shows ads.

### Which is updated more often, TemperatureConverterY or Sixfast?

TemperatureConverterY ships an update every 7 months, and Sixfast every 3 weeks. Most recently, TemperatureConverterY was updated on October 2, 2026 and Sixfast on October 18, 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.*