Mastodon vs Twitter/X: Privacy Comparison
This in-depth comparison weighs Mastodon against Twitter/X 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 Mastodon delivers a clearly stronger privacy experience on balance, even though each option has its own relative pluses and minuses that are worth examining closely.
The Result, Up Front
The most useful starting point is the overall tally and the single dimension that decided it. Across the six privacy dimensions we score, Mastodon finishes ahead of Twitter/X, 40/60 to 34/60. That total reflects a side-by-side review in which one service is consistently the more privacy-respecting choice, even though both cover the same functional ground.
Most of the distance between these services opens up on Data Collection: Mastodon 5/10 versus Twitter/X 4/10. The tightest race is Data Collection, separated by just 1 point (Mastodon 5/10, Twitter/X 4/10). Everything below justifies these totals dimension by dimension.
How Each Service Collects Data
The starting point for judging privacy is always how data is collected. The amount of user data a service captures, keeps, and works with is the single biggest factor behind its privacy exposure. Mastodon shows more discipline on this front, collecting nothing beyond the bare minimum needed for the service to run. The competing option reaches for a much wider set of data, including behavioral patterns, device identifiers, and usage analytics that stretch beyond the essentials. In this category we rated Mastodon 5/10 and Twitter/X 4/10. The gap comes down to more than raw volume -- it is about the intent behind each piece of data and whether collecting it was ever justified.
Encryption Standards
Whether data is moving or resting, encryption is what keeps it safe, and the quality of that work swings widely across services. Mastodon 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, Mastodon scored 6/10 and Twitter/X scored 5/10.
Sharing Data With Outside Parties
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. Mastodon 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: Mastodon 7/10, Twitter/X 6/10.
Controls You Can Actually Use
How much say people have over their own data depends on whether the privacy controls a service offers are both present and actually useful. That spans opt-out switches for data collection, the ability to download and delete information, fine-grained permission settings, and how simply users can act on the rights granted to them under relevant privacy regulations. Mastodon delivers broader, easier-to-reach privacy controls. Scores: Mastodon 8/10, Twitter/X 7/10.
Transparency
Transparency comes down to how plainly a service explains what it does with data. It shows up in how readable the privacy policy is, whether transparency reports are published, how quickly privacy questions get answered, and whether policy changes are communicated up front. Mastodon comes across as the more transparent of the two overall. Plain, easy-to-find privacy communication is the bedrock of informed consent and trust. Scores: Mastodon 9/10, Twitter/X 8/10.
Track Record Over Time
The record of privacy incidents, regulatory run-ins, and how a service answers vulnerabilities offers context you cannot ignore. Mastodon holds the stronger track record here, with a smaller count of incidents and a more responsible response to the problems that did surface. More often than not, what a service did in the past is the best guide to its future privacy conduct. Scores: Mastodon 5/10, Twitter/X 4/10.
Our Bottom-Line Call
Our comprehensive analysis gives Mastodon a total score of 40/60 and Twitter/X a total score of 34/60. The overall winner for privacy is Mastodon. While both services serve similar functional needs, the winner demonstrates a more privacy-respecting approach across the dimensions that matter most. That said, no service is perfect, and users should always configure privacy settings actively regardless of which option they choose. We recommend supplementing your choice with additional privacy tools, a VPN, DNS-level ad blocker, and privacy-focused browser, to build a comprehensive privacy posture. If your threat model requires the strongest possible privacy, consider whether an even more privacy-focused alternative exists in this category beyond the two compared here.