Viscosity Review 2021: Before You Buy, Is It Worth It?

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Viscosity Overview June 2021

There’s one thing you should understand before reading the rest of this review: Viscosity is not a VPN. It’s a high-quality VPN client that establishes fast and secure connections to external servers that run OpenVPN protocol. Since it’s not a VPN, you will need to find your own servers.

It’s not a beginner-friendly program, so I wouldn’t recommend it if you’re new to VPNs. As you have to configure everything yourself from setting up connections to OpenVPN protocol to managing your connection in case it drops. If you’re looking for a simpler option, check out these user-friendly VPNs.

With the ability to save and store various VPN servers, Viscosity can serve as a VPN storage application. You can add those servers into a one-use client for all your VPNs through Viscosity, simply click connect without any username or password.

Don’t Have Time? Here’s a 1-Minute Summary

Viscosity Unblocks Netflix, Hulu, Disney+, HBO Max, and BBC iPlayer

Getting past geoblocks is dependent on the OpenVPN servers you have. While many free VPNs have OpenVPN servers, they don’t have the strongest record of breaking past region locks.

If you’re looking for VPNs capable of streaming Netflix, we’ve compiled a list of services that can bypass the Netflix proxy error. I connected to ExpressVPN’s servers for testing purposes and was able to access various Netflix libraries.

Screenshot of Netflix streamed with Viscosity VPN through ExpressVPN's OpenVPN servers

By connecting to ExpressVPN’s OpenVPN server, I could watch Modern Family from Netflix UK’s library

For a guaranteed way to access your favorite shows and movies anytime, go straight to the source and try ExpressVPN.


Does Viscosity Impact Your Speeds?

Viscosity doesn’t impact your connection speeds. From playing games to watching Netflix and reading articles, I experienced no buffering or lag.

Speed Test Results

I compared Viscosity with a premium VPN to see if there would be any slow speeds or buffering while streaming through OpenVPN servers. When considering which well-known VPN to test, I chose ExpressVPN due to its fast speeds and reliability in unblocking region-locked content.

When testing UK servers, Viscosity doubled the ping (from 83ms to 151ms), but download speeds remained relatively the same (135Mbps and 115Mbps). After 5 tests, I concluded the results remained the same.

Screenshot of speed test results while connected to Express VPN's UK servers through both Viscosity and ExpressVPN

While the ping ended up doubling, speeds barely decreased at all

Oddly enough, the Tokyo servers had the opposite effect. Viscosity reduced the ping (by 97ms) and increased the download speeds (by over 86Mbps). Again, I tested 5 times to verify accuracy and met the same result each time.

Screenshot of speed test results while connected to Express VPN's Japan servers through both Viscosity and ExpressVPN

When connecting to ExpressVPNs Tokyo servers, Viscosity increased speeds

Why Most Speed Tests are Pointless & How We Correctly Test VPN Speeds

Speed determines how fast content uploads, so if you're torrenting or streaming, you want the speed to be somewhat identical to your regular internet speed. Since a VPN encrypts your data, it usually takes a bit longer to send your data back and forth, which can slow down your connection. However, if your ISP deliberately slows down your connection (also known as throttling) a VPN might increase your internet speed. Testing a VPN is somewhat pointless because new servers pop up and affect speed. Your speed can also differ according to your location, so your speed test might not match ours. Having said that, we tested the speed in numerous locations to provide you with the average.


Security — Good Encryption but Flawed

Viscosity provides military-grade encryption to establish a secure connection between your computer and OpenVPN servers. By running its own IPv6 encryption on the client side while connecting to OpenVPN servers, you’ll benefit from 2 encryption protocols running simultaneously.

One major flaw is that Viscosity doesn’t have a kill switch. Not having this feature is a significant problem since your data might leak if your connection dropped. This is especially risky if you’re torrenting, which would put your personal information at risk to be exposed to other unknown peers.

Losing a connection to your VPN exposes your IP address and personal information like credit card numbers, putting you at risk to hackers and other dangers. If your data gets stolen, this can lead to problems such as stolen credit cards and identity theft.

It’s essential for you to keep an eye on your connection status to know when the Viscosity is active and your data is protected. If you prefer a VPN to safeguard your sensitive information for you, you can try ExpressVPN with its built-in kill switch. Then you won’t have to worry about surfing the web unprotected.

Privacy — No-Logs (Kind of)

Viscosity saves logs, but it claims this is only to diagnose any server issues. In its privacy policy, support makes note that it collects email and username information to keep track of who used its product. Beyond that, server logs get stored for 90 days before being deleted. Without an audit to verify the statement, I can’t confirm whether or not this is true.

While Viscosity claims it doesn’t store logs to keep and sell data, keeping data counts as storing logs. If you’re looking for a VPN that will keep your information safe, ExpressVPN has a guaranteed no-logs policy backed by several audits.

Server Locations


User Experience8.0

Simultaneous Device Connections — One Device per License

Viscosity’s free trial and paid versions each work on just one device. You have to upgrade to the full version once your free trial expires. While most VPNs have device compatibility restrictions, IPVanish provides unlimited connections.

Device Compatibility — Very Limited

Viscosity only supports Mac and Windows devices. It’s not yet compatible with other devices, making its usage very limited. Since Viscosity can only be used on laptops and desktops, there are VPNs for Windows PCs that provide more features.

Ease of Set-Up & Installation — Pretty User Friendly

Viscosity’s creators know that operating a VPN client for the first time isn’t an easy task. Fortunately, you can find a comprehensive series of guides on its website that are very easy to follow along with.

  1. Navigate over to the Viscosity homepage. Once there, you’ll see an option to download the client for Mac or Windows.
    Screenshot of Viscosity download page from the Viscosity website
  2. After the download completes, you’ll see a startup wizard. Navigate through the wizard by pressing next and finish while checking all boxes you need.
    Screenshot of Viscosity setup wizard to install the app
  3. Now that the app finished downloading, make your way towards the bottom-right corner of your screen. Right-click the Viscosity icon and click “Preferences”.
    Screenshot showing how to open the preferences menu in Viscosity through the toolbar icon
  4. To add servers, click the “+” in the bottom left corner and either import or manually add new OpenVPN servers. If you don’t know how to do this, Viscosity has in-depth guides to walk you through the setup with ease.
    Screenshot of Viscosity app showing how to add OpenVPN servers

Since Viscosity works by connecting to VPN servers that run OpenVPN protocol, it’s worth looking at these tried and tested free VPNs to see if they’re compatible with the application. OpenVPN is a common security protocol used by most (if not all) VPN providers.


You can get help from Viscosity’s support team through 2 options:

  • Very detailed guides for troubleshooting and FAQs
  • Customer Support email – [email protected]

The guides provided were helpful as learning tools to start using Viscosity. With topics about every question you might have, the support team makes sure you understand how to use Viscosity.

As for Viscosity’s customer support, they were responsive and somewhat helpful. I submitted a support ticket to ask whether Viscosity logged my data when using the program and received a response 40 minutes later. The agent directed me to the privacy policy forums rather than addressing my question.

Sparklabs, the creator of Viscosity, is an Australian-based company. You should submit a ticket during Australian business hours to get the fastest response.

How We Test Customer Support and Why Should You Care

We personally test the customer support team of every VPN we review. This means asking technical question through the live chat feature (where applicable) and measuring the response time for email questions. Whether you need to connect to a specific server, change your security protocol, or configure a VPN on your router, finding a VPN with quality customer support should be important to you.


When it comes to pricing, Viscosity has some of the best prices I’ve seen. You’re able to get the entire product free for one month on macOS or Windows devices — no credit card required! If you wish to keep using its services after the month, it’s a one-time $14 payment to buy the license and use as long as you want.

As for its refund policy, Viscosity has the right to refuse a request if it’s considered unreasonable. Since it’s a one time purchase, the support team will deny any refund requests if you:

  • Change your mind
  • Believed the product performs a different job than it actually does
  • If Sparklabs (creators of Viscosity) have incurred significant support costs

Viscosty’s support team claims that they understand that mistakes happen though. Within a few hours of realizing I accidentally purchased the full version, I reached out to customer support to request a refund. My request was accepted and I saw my money back 2 days later in my bank account.

Viscosity offers the following plans

Final Verdict

While not the best choice for beginners, Viscosity is a good fit for you if you have previous experience with OpenVPN. If you want a more hands on style for setting up VPN connections, this is the perfect product for you. It’s also a great application for storing and managing a wide array of VPN servers that run the OpenVPN protocol.

For a beginner, you won’t get much out of this product. It requires a bit of knowledge about VPN servers and security to get the most out of it. If you’re interested in how VPNs can mask your IP address to watch shows on Netflix, there are plenty of providers who can meet your needs. ExpressVPN is a reliable choice as you can access thousands of servers, unblock all major streaming websites, and comes with a verified no-logs policy backed by third-party audits.

Viscosity’s value comes in its function as a VPN storage app. It’s great if you have multiple VPNs since it can save usernames and passwords for each server. Then you can connect to all of your servers with the click of a button. There’s no more hassle in needing to remember multiple login information when one app can streamline that process for you. The best part is you can try it free for one month with no payment of any kind required.

Common FAQs

Is Viscosity the right fit for me?

If you have multiple VPNs for private use, work, and school, I’d highly recommend Viscosity. Its value comes in a VPN storage pack where you can easily access any of your servers with a stable and secure connection backed by military-grade encryption.

As far as beginner-friendly VPN products go, Viscosity isn’t the best option. Viscosity isn’t a VPN provider at all — it’s an OpenVPN software. It puts more responsibility on you to find and use servers that run OpenVPN protocol. If you’re not tech savvy then this isn’t the best product for you.

If you’re a beginner looking for a VPN, your best bet would be to find a high-quality VPN provider. ExpressVPN is a great all-around VPN, as it comes equipped with everything you’d need. You’ll have access to 5,500+ servers, guaranteed access to region-locked websites like Netflix and Hulu, and reliable speeds. If you want to test its features first, you can also try it for free for 30 days!

Can I get Viscosity for free?

Yes, you can get Viscosity for free for one month. The free trial doesn’t require an email nor a credit card. You just need to download it on your macOS or Windows device. The 30-day trial gives you full access to the application, letting you explore all of its features before deciding whether to commit to a payment. However, Viscosity has a very strict refund policy so you might want to be sure it would be a good fit before you subscribe.

If you’re interested in a VPN provider that offers a 30-day money-back guarantee, there are some great options. ExpressVPN doesn’t ask any questions during the refund process. If you’re dissatisfied with the service, you can get a refund within just a few minutes. When testing it out myself, I got my money back in my back account 2 days later.

Will I be safe using Viscosity?

Viscosity is a safe VPN client when it comes to making sure your data remains encrypted. While you can connect to servers that run OpenVPN security protocols, Viscosity adds IPv6 for another layer of security, ensuring you remain safe while browsing the web.

However, I can’t say this is a safe VPN client without a kill switch. If your server connection drops, a kill switch will disconnect you from the internet so you won’t surf the web unsecured. The issue here is that Viscosity can disconnect at random, leaving you unsecured without notification. While this only happened to me once during testing, this is a significant risk to your personal information and security that doesn’t have a failsafe option.

For a safe VPN alternative, you can try ExpressVPN’s top-notch security features. With ExpressVPN, you’ll have access to a kill switch that guarantees you only have an internet connection while secured. Backed by its staunch no-logs policy, you won’t have to worry about your data being sold off to any third-parties.

Try Viscosity for yourself

Important to know


Contact Details

[email protected]

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