The First Free App to Protect Against AI/SI Voice Clone Scams.

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

We first built it to protect our own families, and made it free for every trusted group. There is no paid plan, credit card, or paywall. Included features cover unlimited group members, rotating codewords, the iMessage extension, verifying any Proofie, and creating up to 3 Proofies a month.

Yes. Download the app, scan a QR code to join your trusted group, and see the codewords immediately. Basic use requires no account or technical knowledge. If someone in your group can open an app, they can use Trust Onion.

When someone calls or texts claiming to be in your group, ask them to give all three current codewords first. Compare them privately in your app; never reveal your words to an unverified caller. Trust Onion generates shared codewords that rotate every 60 seconds for group members. If the caller cannot confirm them, pause and verify through a known channel. Read our take on the secret codewords that scammers hate.

Yes. Paste any suspicious text into the app's Text Message Checker and press return. It helps you spot warning signs: a caution level, the specific red flags it found, who the message claims to be from, and how to verify directly with a number you look up yourself. It never declares a message trustworthy, because no tool can confirm a sender or where a link leads. It runs entirely on your phone, works offline, needs no login, and nothing you paste is stored or sent anywhere.

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.

Codewords are generated on your device and never touch our servers. Proofies are different: their photos are permanently published to public IPFS, and full signed records, including time, What3Words location and optional coordinates, are public JSON pinned to IPFS. Use the Trust Onion app to verify a Proofie and compare its full signing key with the person's public key in your shared group. Public IPFS publication is not private sharing. Removing one in the app hides it and disables its share link, but does not erase its photo from IPFS. We don't sell data.