Fizz is an anonymous social app built for college campuses. Posts carry no username, no photo, and no identity just a school-specific feed where verified students say whatever they want with no attribution. That design is also why a Fizz post became a Princeton threat investigation in February 2026, why anonymous Fizz accounts spread false shooter descriptions during a swatting hoax at the Claremont Colleges in March 2025, and why Bryn Mawr’s student government voted to ban it. The anonymity is the product. The incidents are what happens when that product works as designed.
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What Is the Fizz App?

Fizz is a school-locked, anonymous social platform. Access requires verification as a current student at a specific college, which you join through a .edu email address, and the feed you see is specific to your campus. Posts and comments appear with no username, no profile photo, and no identity marker of any kind attached. You know a post came from someone verified at your school. You do not know who.
What Fizz includes:
- An anonymous, school-specific feed where any verified student can post
- Anonymous commenting on posts
- Direct messaging between users — the one feature that introduces an identity layer, discussed below
- Upvote and downvote mechanics similar to Reddit
- No public profile, no follower graph, no cross-campus visibility
What Fizz is designed for:
The pitch is uncensored campus conversation: the things students want to say about dorm life, class difficulty, social dynamics, and campus culture that they would not say under their real name. The format intentionally removes the social accountability that prevents those conversations on Instagram or Twitter.
What the design makes structurally difficult:
Moderation. When a post causes harm a threat, a hoax, targeted harassment there is no username to ban, no profile to remove, and no identity to report to campus authorities without Fizz’s cooperation in unmasking the poster through internal records.
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Where Anonymity Breaks Down: Fizz DMs
Fizz’s feed is fully anonymous. Its direct message feature is not.
When a Fizz user sends you a DM, the conversation moves from the anonymous feed into a one-on-one channel where the other person can say things, share information, and present an identity, a name, a photo, a claimed major or dorm that carries more apparent credibility than an anonymous feed post but still has no verification behind it.
Why this matters:
The DM feature is where the risks familiar from other platforms begin to apply to Fizz. Someone who posts anonymously in the feed has no identity to verify. Someone who slides into your Fizz DMs and introduces themselves is presenting an identity that can be cross-referenced, but that identity is still entirely self-reported, just as it is on any other platform.
A person who DMs you on Fizz claiming to be a sophomore in your building, a classmate from your major, or a mutual friend’s roommate may be exactly who they say they are. They may also be a verified student from your school who is presenting a fabricated story to establish off-campus contact. The school-verified membership confirms they have a .edu address from your campus. It confirms nothing about who they say they are beyond that.
Is the Fizz App Safe? What to Check Before You Trust a DM
The anonymous feed on Fizz does not present a verification problem in the traditional sense; there is no identity to verify because there is no identity presented. The verification risk on Fizz is concentrated in the DM feature, where an identity is presented, and contact can escalate toward off-campus interaction.
Check Their Story for Consistency
Before any off-campus contact, test the internal consistency of what they have told you. If they claim to be in a specific dorm, a specific class, or part of a specific campus group, those claims are checkable through campus resources that do not require any external tool. Someone whose story does not hold up against basic campus-specific questions is worth being cautious about before meeting in person.
Reverse Image Search Any Photo They Share
If the person you are DMing shares a photo, a selfie, a profile photo from another platform, or any image of themselves, save it and upload it to Social Catfish’s reverse image search.
What this confirms:
Social Catfish’s facial recognition finds where that face appears online and under what names. A genuine student whose photo is their own appears consistently under their own name across their real social media. A photo that traces back to someone else’s Instagram or appears under a completely different name confirms the person in your DMs is presenting a borrowed identity.
Cross-Reference Any Username or Name They Share
If they share their name, a social media handle, or any other contact information in the DM, enter it into Social Catfish’s cross-platform username search. The search returns every platform where that identity is active, alongside the real identity connected to it.
For a genuine student at your school, the name and handle they share should surface a consistent social media presence with a history that matches what they have told you. A name that produces no results or a handle that appears under a different identity than claimed is worth taking seriously before any in-person meeting.
Trust Your Campus Resources for Serious Incidents
If a Fizz post or DM involves a credible threat, targeted harassment, or any content that creates genuine safety concern, the appropriate response is your campus’s Department of Public Safety or equivalent, not an attempt to identify the poster yourself. As the Princeton case demonstrates, law enforcement can compel Fizz to identify posters through internal records when a genuine threat investigation is warranted. That process exists precisely for situations where the anonymous format is being used to cause real harm.
All Social Catfish searches are completely confidential. The person being searched receives no notification.
“anyone else in that 8am lecture want to study together lol dm me”
Jordan · Same campus
“hey! i’m actually in that class too, here’s my insta 👀”
What this DM actually confirms
Private and confidential — only you see the results.
FAQ
Fizz is an anonymous social app restricted to verified students at a specific college campus. Posts and comments carry no username or photo, only a school-specific feed where verified students can post without any identity attached.
Fizz is operated by Fizz Social, Inc. The app launched at Stanford and has expanded to dozens of college campuses across the United States. The company maintains internal records that can identify the users behind specific anonymous posts when compelled by law enforcement, as demonstrated by the Princeton Department of Public Safety’s February 2026 investigation.
Yes. Fizz includes a direct messaging feature that allows one-on-one conversation between users. Unlike the anonymous feed, DMs create a channel where the other person may present identifying information a name, a photo, a social media handle though that information remains self-reported and unverified by the platform.
Yes, under specific circumstances. Fizz maintains internal records that can be used to identify the account behind an anonymous post when law enforcement compels disclosure through a valid legal process. Anonymity on Fizz is real in the sense that other users cannot see who posted.
No. Fizz is campus-specific and requires a verified .edu email address from a school that has been added to Fizz’s network. You can only see and post in your own campus’s feed; there is no cross-campus browsing or general public access. The app has expanded from its Stanford origin to dozens of US campuses, but it is not available at every college and university.
Conclusion
Fizz’s anonymity is not a bug; it is the product. The same design that makes it an appealing space for uncensored campus conversation is what made a Princeton post a threat investigation, turned anonymous Claremont accounts into a swatting-hoax amplifier, and produced enough documented harm at Bryn Mawr to prompt a student-government ban vote. For the anonymous feed itself, there is no profile to verify, and no identity to check; the risk is the content, not the person behind it. For Fizz DMs, the usual verification logic applies: a name and photo shared in a one-on-one conversation can be reverse-searched through Social Catfish before any off-campus contact happens. That is where the verification gap exists on Fizz, and it is the same gap that exists on every other platform where a self-reported identity is the only identity available.
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To get more accurate results, enter the full name including at least First name, Middle name and Last name.
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