This app offers a simple, offline solution to verify caller identity using rotating family codewords and verified selfies (Proofies). It helps protect against AI voice cloning and other scams by providing a secure way to confirm loved ones are who they claim to be.
3.2
October 18, 2026
What's New in Trust Onion 3.2 Password protect and set Self destruct options for your Proofie™. Apple Watch App: Easily see your unlocked codewords on your watch screen. Signed Proofie™. Every Proofie™ photo is now signed with your passkey, so anyone can check it's the real, unaltered original. Each photo shows your group's words and the what3words location from the moment it was taken. Password-protected groups. Back up your groups with a password only you know. One password unlocks all your groups at once. Scam Pulse. A curated feed of the latest AI voice-clone scams, so you know what to watch for. Text Message Checker. Check a suspicious text right on your phone before you reply. Now in 11 languages. Choose your language the first time you open the app, or change it anytime in Settings. Easier invitations. Invite people by name, share an invitation with anyone by link, and see all your groups in the iMessage app. More reliable passkeys. Your passkey and Proof ID stay with you when you sign out and back in, or when your phone is locked. A fresh new look. A new glass app icon.
MoreTrust Onion is a mobile application designed to help users verify the identity of callers, especially against AI voice cloning scams. It uses a system of rotating family codewords and verified selfies (Proofies) to ensure the person on the other end is who they claim to be.
Trust Onion uses a shared, rotating set of three codewords that only family members know. If someone calls claiming to be a family member but cannot provide the current codeword, it signals a potential scam. Additionally, 'Proofies' provide verified selfies with live location and timestamps that are difficult to fake with AI.
No, Trust Onion is designed to work fully offline. The codewords are generated locally on your device, and no server or cloud connection is required for its basic functionality, ensuring privacy and accessibility.
Yes, Trust Onion is free to use for its core features, including codeword generation and basic Proofie sharing. The app aims to make family protection accessible without cost.
A Proofie is a verified selfie that includes your current codewords overlaid on the photo, your live location, a timestamp, and a cryptographic signature tied to your device. This makes it extremely difficult to forge or reuse an old Proofie.
The codewords rotate automatically on a timer, ensuring that even if someone overhears today's words, they expire and become invalid. This dynamic system enhances security against potential eavesdropping.
Trust Onion has an age rating of 4+, making it suitable for a wide range of users. The app's interface is designed to be simple and easy to use for all family members.
Trust Onion prioritizes privacy by keeping all family data on your devices. Codewords and Proofies are not collected or stored on their servers. Biometric authentication also remains on your device and is never transmitted.
