About Vauchi

Privacy-focused updatable contact cards via in-person exchange.

What We're Building

Vauchi is a living contact card you exchange face to face — a small, deliberate moment, like a handshake. After that, when your details change, everyone who holds your card sees the update automatically. No reminders to send, no "I got a new number" group text.

The relationship is yours and the person's you met. No one else is in the room.

Unlike traditional contact apps:

Meet once, stay in touch — exchange in person; it keeps itself current
No sign-up, no phone number — your device is your identity
Yours alone — end-to-end encrypted, so only you and your contacts can read it
Open source — verify every claim yourself

Why We Built It

Your address book quietly rots. You change jobs, move cities, get a new number — and one by one, the people who matter drift out of reach. The usual fix is to let a platform — a social network, a messaging app — be the keeper of who you know. That works, but the price is handing your relationships to a company.

We think the moment you meet someone is worth protecting. So Vauchi keeps your details current for the people you've actually met, and keeps everyone else — including us — out of it.

Learn More

Our Principles — The values that guide every decision
Security — How we protect your data
Community — How to participate
Supporters — Those who help make Vauchi possible

Open Source

Vauchi is open source under GPL-3.0-or-later. You can:

Inspect the code
Verify security claims
Contribute improvements
Run your own relay server

GitLab: https://gitlab.com/vauchi GitHub Mirror: https://github.com/vauchi

Contact