Voice & Texts Can Be Faked.
Family Codewords Can't.

Yes. Trust Onion is free to download and use. Family codewords, group verification, and Proofies are all included at no cost. No credit card, no trial period, no paywall.

Trust Onion is free forever for the essentials. The Free plan includes unlimited family members, rotating family codewords, the iMessage extension, verifying any Proofie, and creating up to 3 Proofies a month. For families who want more, Trust Onion Plus is available as monthly ($6.99/month) or yearly ($49.99/year — best value, around 40% off). Plus is the logged-in family experience: a single admin view to invite, organize, and manage family members; automatic rotation of your family codewords so they stay fresh without anyone having to remember; an organized history of every Proofie your family has created and verified; and an account that backs everything up so you can switch phones or add a new member without rebuilding anything. The admin pays once and everyone in the family gets the upgrade. You can stay on Free forever, or upgrade whenever you want the extra layers.

100% Yes. Trust Onion was designed to pass the "mom test." Download the app, scan a QR code to join your family group, and you can see the codeword immediately. No account creation required for basic use. No technical knowledge needed. If someone in your family can open an app, they can use Trust Onion with confidence.

When someone calls or texts claiming to be a family member, you ask: "What's the codeword?" Trust Onion generates a shared codeword that rotates every 60 seconds, visible only to your family group on the Trust Onion app. A real family member opens the app and reads it back, only you and them have access to this word. A scammer with a cloned voice has nothing to say. The call ends in three seconds.

No. Codewords are calculated locally on each device with no server involved, nothing exists outside your phone. They're never transmitted over the internet, so there's nothing to intercept. It works even in airplane mode. They rotate automatically, so even if one were overheard, it expires before anyone could use it.

No. Trust Onion is built with privacy at its core. Codewords are generated on your device and never touch our servers. We don't track your location unless you choose to include it in a Proofie, and we don't ingest that data either, just pass it to your recipient. We don't sell data, serve ads, or share your information with third parties.