Tor Browser vs Mullvad Browser: Privacy Comparison
This in-depth comparison weighs Tor Browser against Mullvad Browser along six decisive privacy dimensions: how data is collected, how encryption is implemented, how data is shared with third parties, what privacy controls users get, how transparent each service is, and what their historical track record looks like. The two cover much the same ground, yet they handle user privacy in very different ways. What our review shows is that Tor Browser delivers a clearly stronger privacy experience on balance, even though each option has its own relative pluses and minuses that are worth examining closely.
What the Numbers Say
Here is the result of weighing both services across the dimensions that decide real-world privacy. Across the six privacy dimensions we score, Tor Browser finishes ahead of Mullvad Browser, 42/60 to 36/60. That total reflects a privacy face-off in which one service is consistently the more privacy-respecting choice, even though both cover the same functional ground.
The largest single-dimension gap is in Data Collection, where Tor Browser leads by 1 point -- Tor Browser 7/10 to Mullvad Browser 6/10. Data Collection is where they come closest, a mere 1-point gap (7 vs 6 out of 10). The detailed walkthrough below shows the reasoning behind every score.
What Gets Collected
Every privacy assessment starts with data collection. How much a service gathers, stores, and processes about its users is what ultimately drives the privacy risk of using it. Tor Browser takes a leaner approach here, capturing only the data strictly required to make the service work. Its rival pulls in a wider net of information -- behavioral patterns, device identifiers, and usage analytics that go well past what the core features actually need. Our marks were Tor Browser 7/10 and Mullvad Browser 6/10 in this area. What separates them is not merely how much is gathered but why it is gathered and whether it is truly needed.
Encryption Implementation
Whether data is moving or resting, encryption is what keeps it safe, and the quality of that work swings widely across services. Tor Browser brings more capable encryption to the table, pairing more resilient protocols for data in transit with better protection for data at rest. Where the two differ is in coverage (exactly which data is encrypted), in strength (the algorithms and key lengths chosen), and in whether end-to-end encryption is used at all (which stops even the service operator from seeing user content). On encryption, Tor Browser scored 8/10 and Mullvad Browser scored 7/10.
Third-Party Data Sharing
A service's willingness to hand data to outside parties is a make-or-break privacy factor. That covers advertising networks, analytics providers, business partners, and what happens when governments come asking. Tor Browser keeps a tighter lid on who can reach user data. These sharing habits shape security as much as privacy, since every extra party granted access becomes one more way a breach could happen. Scores: Tor Browser 9/10, Mullvad Browser 8/10.
Controls You Can Actually Use
Individuals only hold real power over their data when a service's privacy controls are available and genuinely effective. The relevant tools include the option to opt out of data collection, ways to download and erase data, granular permission settings, and how readily users can exercise the rights afforded them by applicable privacy regulations. Tor Browser offers more complete and approachable privacy controls. Scores: Tor Browser 5/10, Mullvad Browser 4/10.
Transparency
Transparency encompasses how clearly each service communicates its data practices. This includes the readability of privacy policies, the publication of transparency reports, responsiveness to privacy inquiries, and proactive communication about policy changes. Tor Browser demonstrates stronger transparency overall. Clear, accessible privacy communication is essential for informed consent and trust. Scores: Tor Browser 6/10, Mullvad Browser 5/10.
Historical Track Record
Looking at how a service has handled privacy incidents, regulatory actions, and disclosed vulnerabilities over time adds essential context. Tor Browser carries the better historical record on privacy, having faced fewer incidents and dealt with the ones that did come up more responsibly. How a company has acted before is usually the clearest signal of how it will act on privacy going forward. Scores: Tor Browser 7/10, Mullvad Browser 6/10.
Our Bottom-Line Call
When the full analysis is tallied, Tor Browser finishes at 42/60 and Mullvad Browser at 36/60. On privacy grounds, the overall winner is Tor Browser. Both products meet similar functional needs, yet the winner brings a more privacy-respecting approach to the dimensions that carry the most weight. Still, perfection is off the table for any service, so no matter which you choose you should actively set up its privacy options. Our advice is to round out your pick with additional privacy tools, a VPN, DNS-level ad blocker, and privacy-focused browser, to assemble a thorough privacy posture. Should your threat model call for the strongest privacy possible, weigh whether an even more privacy-focused alternative exists in this category beyond the two compared here.