KookVPN vs LetsVPN
LetsVPN is cheap, easy to install, and popular among China-based users. But who runs it? Where are the servers? What do they log? If you cannot answer these questions about a service routing ALL of your internet traffic, that is a problem.
Quick Verdict
LetsVPN is one of the most popular VPN apps among users in China, primarily because it is cheap ($5-10/month), easy to use, and accepts Chinese payment methods (Alipay, WeChat Pay). For casual browsing -- scrolling Instagram, watching some YouTube -- it gets the job done most of the time. But LetsVPN has serious trust problems. The company behind it is opaque: no clear jurisdiction, no named founders, no independent audits, and a privacy policy that says almost nothing concrete. If you are routing your API keys, work email, banking sessions, and personal data through a VPN, you need to know who is seeing that data. KookVPN is run by one person with transparent infrastructure on DigitalOcean. LetsVPN is run by... someone. For casual users who only need occasional access, LetsVPN is functional. For anyone handling sensitive data, the trust gap makes KookVPN the only responsible choice.
Feature-by-Feature Comparison
| Feature | KookVPN | LetsVPN |
|---|---|---|
| Protocol | VLESS+Reality+Vision | Proprietary (undisclosed) |
| GFW Detection Risk | Undetectable | Variable |
| Company Ownership | Transparent (solo founder) | Unknown / Opaque |
| Privacy Policy | Zero-log guarantee | Vague / Minimal |
| Server Infrastructure | Private dedicated | Shared (undisclosed) |
| TUN Mode (OS-level capture) | ||
| Kill Switch | ||
| Split Routing | Basic | |
| BBR Congestion Control | ||
| Active Probe Defense | Unknown | |
| Open Source Client | sing-box based | Closed source |
| Monthly Price | $30/mo | ~$5-10/mo |
| Annual Price | $15/mo | ~$3-5/mo |
| Refund Policy | 7-day money-back | Unknown |
| Payment Methods | Crypto, PayPal, Stripe | Alipay, WeChat Pay |
| Platforms | Windows | Windows, Mac, iOS, Android |
| English Support | Limited | |
| Independent Security Audit |
Who Is LetsVPN? Nobody Really Knows.
When you connect to a VPN, every single byte of your internet traffic routes through that company's servers. Your emails. Your passwords. Your API keys. Your banking sessions. Your private messages. A VPN operator has more access to your data than your ISP.
With that level of access, you need to trust the operator. Here is what we know about LetsVPN:
- Ownership: Unknown. No named founders, no corporate registration information publicly available, no clear jurisdiction.
- Privacy Policy: Vague and minimal. Does not clearly state what data is collected, retained, or shared. Compare this to KookVPN's explicit zero-log guarantee.
- Server Infrastructure: Undisclosed. No information about where servers are located, who hosts them, or what security measures protect them.
- Protocol: Proprietary and closed-source. You cannot verify what the app does with your data because you cannot see the code.
- Security Audits: None published. No independent verification that the service does what it claims.
- Business Model: At $5-10/month with multi-platform support, the margins are thin. When a VPN is unusually cheap, the question becomes: how are they actually making money?
None of this means LetsVPN is necessarily malicious. It means you are making a trust decision with no information. For casual YouTube browsing, the risk may be acceptable. For routing your Anthropic API keys, OpenAI credentials, work email, and financial data, the risk is not.
Closed-Source App vs Open-Source Engine
KookVPN: Built on sing-box
KookVPN's VPN engine is sing-box -- an open-source, widely-audited proxy platform. The VLESS+Reality protocol is implemented in Xray-core, another open-source project with public code reviews and active security research. You can verify exactly what the software does. The custom KookVPN GUI is a wrapper around these proven, transparent tools. TUN mode captures all OS traffic. The kill switch prevents any data leaks. DNS-over-TLS encrypts all DNS queries.
LetsVPN: Proprietary Everything
LetsVPN uses proprietary, closed-source software for both the client app and the VPN protocol. There is no way to verify what data the app collects, whether it logs your traffic, or how it handles your credentials. The protocol is undisclosed -- you do not know what encryption is used, whether there is a kill switch at the protocol level, or how DNS queries are handled. You are trusting a black box with your entire internet presence.
Who Should Choose What
Choose KookVPN If You...
- Route sensitive data through your VPN (API keys, work email, banking)
- Want to know who operates your VPN service
- Need a zero-log guarantee you can actually trust
- Use AI development tools that require IP safety
- Prefer open-source VPN engines over proprietary black boxes
- Need protocol-level undetectability during crackdowns
Choose LetsVPN If You...
- Only need VPN for casual browsing (YouTube, Instagram)
- Want the cheapest possible option ($5-10/month)
- Need to pay via Alipay or WeChat Pay
- Want multi-platform support (iOS, Android, Mac)
- Do not route sensitive or work-related data through VPN
- Are comfortable with an unknown operator handling your traffic
Users Who Upgraded from LetsVPN
I used LetsVPN for a year because it was cheap and easy. Then I started using Claude Code for work and realized I was routing my API keys through a VPN I knew nothing about. Switched to KookVPN the same day.
LetsVPN works for scrolling Instagram. But when I started remote work and needed reliable Zoom and Google Workspace, it was not consistent enough. KookVPN handles the professional stuff.
My friend in cybersecurity asked me who runs LetsVPN. I had no answer. He pointed out that they route all my internet traffic and I do not even know their country of registration. That was the wake-up call.
See How Other VPNs Compare
Know who handles your data
One founder. Transparent infrastructure. Zero-log guarantee. Open-source VPN engine. 7-day money-back guarantee.