# Calf VPN - Calf Booster bpn — One Tap Connect VPN

> Network diagnostic and optimization tools with detailed connection monitoring and analysis. (iPhone/iPad app by Ruiqi Calf.)

- Source: https://appshunter.io/ios/app/calf-vpn-calf-booster-bpn/id6799385015 (this page in markdown: same URL + `.md`)
- Developer: [Ruiqi Calf](https://appshunter.io/developer/6799385017)
- Category: Utilities
- Price: Free with in-app purchases
- Age rating: 17+
- Requires: iOS 15.0 · 40 MB
- Languages: Chinese (Simplified, China), American English
- Released: 2026-09-06
- Data updated: 2026-09-11
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/calf-vpn-calf-booster-bpn/id6799385015/reviews.md

## What is Calf VPN?

建立加密隧道，并将连接后的网络状态、诊断数据和可调参数清晰呈现。
【网络工具，装进一个应用】
· 网络体检 — 完成检查，生成网络健康评分，并提供可操作的优化建议
· 网速测试 — 测试下载、上传、延迟、抖动与丢包，提供综合评级、实时速率曲线和历史记录
· 延迟与路由 — 查看实时 逐跳路径，支持多个测试目标；通过各跳数据帮助定位可能出现波动的链路区段
· DNS 泄漏检测 — 向测试域名发起解析，帮助了解当前连接的 DNS 配置
· 仅本机实时流量监控 — 按秒查看隧道内吞吐、24 小时流量分布、会话时长、数据包数量与重传率
· 仅本机连接日志 — 查看本机保存的事件时间线，支持搜索、按类型筛选、导出和清空
· 协议实验室 — 调节协议、MTU、连接端口及传输参数，比较不同配置下的连接表现
· 节点质量报告 — 查看全球已覆盖线路的在线数、平均延迟、平均负载、可用率和 24 小时延迟热力图，可按延迟、可用率、负载或地区筛选排序  
【自动连接与断网保护】
支持按 Wi-Fi 信任列表设置自动连接规则。连接未加入受信任列表的 Wi-Fi 时自动接入
【连接表现对比】
比较不同协议或配置下的延迟、握手耗时、吞吐量和设备 CPU 占用。测试结果会受到设备、网络环境和线路状况影响。
【灵活调整连接参数】
MTU 支持在 1200–1500 之间手动调节。应用会根据链路测试结果提供建议值，帮助降低 IP 分片风险。TCP Fast Open 与多路径传输 MPTCP 在系统和网络支持时可用。
【关于隐私】
应用内连接日志仅保存在本机，可在设置中清空。节点质量报告使用聚合网络质量采样数据，具体采集范围、用途和保存期限请参阅隐私政策。







我们提供多种自动续期会员套餐。每个套餐的服务内容、订阅周期和续期价格以购买页面显示为准。确认购买后，费用将从 Apple 账户扣除。订阅会自动续期，除非在当前订阅期结束前至少 24 小时取消。你可以在 App Store 的账户设置中管理或取消订阅。
隐私政策：https://calfvpn.github.io/legal/privacy-policy.html
使用条款：https://calfvpn.github.io/legal/terms-of-use.html

## Key features

- Network health score and optimization suggestions
- Speed test with download, upload, and latency metrics
- Real-time latency and route tracing
- DNS leak detection
- Real-time traffic monitoring
- Connection log management
- Protocol and parameter adjustment

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| 周卡 | $2.99 | per 7 days |
| 月卡 | $6.99 | per month |
| 季卡 | $19.99 | per 3 months |
| 年卡 | $49.99 | per year |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/calf-vpn-calf-booster-bpn/id6799385015/reviews.md

### 5/5 — 不会因为别人不开心

*2026-09-10*

这么样啊怎么还没到家呢你还没下班啊你在哪了你，

## Frequently asked questions about Calf VPN

### Does Calf VPN have ads?

No, Calf VPN does not contain advertisements. The application is free to download and use, with optional in-app purchases for premium features.

### What are the subscription options for Calf VPN?

Calf VPN offers several auto-renewing subscription plans: a weekly plan for $2.99, a monthly plan for $6.99, a quarterly plan for $19.99, and an annual plan for $49.99. These plans provide access to enhanced services and features.

### How can I manage or cancel my Calf VPN subscription?

You can manage or cancel your subscription through your Apple Account settings in the App Store. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current subscription period.

### What devices is Calf VPN compatible with?

Calf VPN is compatible with iPhone, iPad, and iPod devices. It is designed to run on Apple's iOS operating system.

### How often is Calf VPN updated?

The latest version of Calf VPN is 1.1, which was last updated on September 8, 2026. Updates typically include new features, bug fixes, and performance improvements.

### What is the age rating for Calf VPN?

Calf VPN has an age rating of 17+. This rating is based on the content and features available within the application.

### Where can I find the privacy policy and terms of use for Calf VPN?

The privacy policy for Calf VPN can be found at https://calfvpn.github.io/legal/privacy-policy.html, and the terms of use are available at https://calfvpn.github.io/legal/terms-of-use.html.

### Can I adjust connection parameters in Calf VPN?

Yes, Calf VPN allows flexible adjustment of connection parameters. You can manually adjust the MTU between 1200–1500, and TCP Fast Open and MPTCP are available when supported by the system and network.

## Version history (last 2 releases)

### 1.1 — 2026-09-08

Improved encryption stability
Improved user experience
Fixed display issues on some devices

### 1.0 — 2026-09-07

No release notes.

## Related topics

[小牛加速器](https://appshunter.io/ios/topics/小牛加速器)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-11.*