Thunder VPN Review

We examined Thunder VPN’s privacy policy and can reveal what it logs:

Thunder VPN used to log user IP addresses and it was the lowest rated VPN in our privacy assessment.

However, it now claims to have stopped collecting IP addresses. This is a substantial improvement, but it still logs more data than any VPN user should be comfortable with. There is also no detail about deletion policies, metadata, retention period or anything else.

The privacy policy states: “We store this to be able to deliver the best possible network experience to you.” We see this as a justification from VPN services regularly. But to be clear: there is no excuse for logging this amount of data.

There has also been no third-party audit to verify Thunder VPN’s logging policy claims.

Like most VPN providers who collect data, Thunder VPN claims this is done in the name of a ‘better service.’ We strongly recommend using a no-logs VPN like Private Internet Access, instead.

Who Owns Thunder VPN?

Thunder VPN is owned by the app developer Signal Lab. They are also behind Secure VPN – another popular free app.

Signal Lab actually doesn’t have a company website, but has threadbare sites for its apps. There isn’t much to learn from any of these.

The only reference to itself as a company is a link to an (unprofessional) gmail address.

The corporate structure behind Thunder VPN is shrouded in mystery.

Its corporate address is listed as a US address in Arkansas (but the zip code is actually based in California).

But this address is for payment processes only. Our independent research on free VPN ownership discovered that Thunder VPN are, in fact, “independent developers from Hong Kong.”

And yet, there are no companies called Signal Lab currently registered in Hong Kong.

Where the VPN company is incorporated, as they are obliged to follow the laws of that country or region.

This lack of transparency is a cause for concern. When you use a VPN, you are trusting them to protect your data and secure your privacy; you are essentially handing your data to it. Not knowing who is behind it should give you pause before you sign up.

There is very little information about the security measures and VPN protocols used to protect user data by Thunder VPN.

The FAQ page of Thunder VPN’s website (since removed) reads, “we use SSL to encrypt your internet data.”

That may sound impressive, but SSL (Standard Layer Security) is an outdated and weak level of protection made in 1995.

The industry-standard VPN encryption protocol is now OpenVPN or WireGuard, with the AES-256 cipher. But this is not available within Thunder VPN’s apps.

Surprisingly, the VPN passed our IP and DNS leak tests, which is one positive among many negatives.

It also has an ‘App Filter’ – a version of split tunneling so that you can choose which of your Android apps get encrypted and which don’t.

In short, Thunder VPN is not safe to use. Its encryption is weak, it lacks a VPN kill switch, and it has an invasive logging policy that involves the collection of your connection data.

There are no additional security features on offer either. If you’re looking to secure your connection or protect your privacy, Thunder VPN is not a safe option.

We tested Thunder VPN’s speeds on all of its available servers. These are the results:

As you can se from our data, we recorded massive speed losses using Thunder VPN.

Average download speeds of 12Mbps when connecting to a nearby VPN server is nowhere near fast enough for reliable streaming, torrenting, or even casual browsing.

We recommend trying out one of these fast VPNs, instead.

We tested Thunder VPN on a number of streaming services. You can see which it worked to unblock in the list below:

Thunder VPN works well with BBC iPlayer, and has done so for a while to its credit.

It’s free UK server presents no issues; there is barely any buffer time required and the content streams at good quality. This is good news for fans of the streaming service.

But Thunder VPN has made no progress in unblocking US Netflix, or any other service.

Both its US East and US West servers fail to bypass the streaming service’s proxy detection. As a result, Thunder VPN will not work to stream Netflix content from other international libraries.

If you need a VPN to watch geo-blocked video content, see our list of the top VPNs for streaming.

Thunder VPN’s Terms of Service state that certain activities can lead to an account termination, including “Uploading, downloading, posting, reproducing, or distribution of any content protected by copyright.”

You should therefore be very careful not to torrent copyrighted material when using this VPN. If you do, Thunder VPN states:

“You may be held responsible for any and all damages incurred by Thunder VPN , including any amounts charged by any outside entity due to said violation(s).”

Bizarrely, the Thunder VPN app claims to work for torrenting, on services like BitTorrent, but that wasn’t the case when we tested it. The VPN was simply too slow.

Additionally, Thunder VPN lacks critical security features that are necessary for safe torrenting. P2P users must use safe free torrent VPNs for fast and secure file-sharing.

Thunder VPN doesn’t work in China, simply because it doesn’t come with any VPN obfuscation tools. Chinese censors can therefore easily detect Thunder VPN’s connections.

There’s little chance Thunder VPN will work in other highly-censored countries like the UAE, Russia, Turkey, and Iran.

If you’re living or travelling to a high censorship country, we highly recommend you use a premium VPN that can beat aggressive web filters.

Our Astrill China tests and ExpressVPN obfuscation tests reveal both are highly reliable VPNs that beat Chinese web censorship.

Thunder VPN support is lacking. There is an FAQ within the app that offers no real value.

There’s also an email for support, but it can’t be found within the app.

Alternatively, in the app you can head to ‘Feedback’ and then describe ‘Other problems,’ typing in your email to generate a ticket.

The website itself is very basic: a mere landing page with little to discover. It’s more than a lot of other free VPN services provide (many don’t have websites).

But with such little help or information to be gained, you wonder why Thunder VPN even bothered.