TalkOnce vs Sendant

TalkOnce — the message no one else can read. Not even us. TalkOnce is a private messenger built so that we cannot read your messages. Your messages, calls, and media are end-to-end encrypted with post-quantum cryptography — sealed on your device, opened only on your recipient's. We hold no keys. No number. No name. Sign up with nothing — no phone number, no email, no real name. There's no account profile to leak, subpoena, or sell. Built for tomorrow's attacker. TalkOnce uses hybrid classical + post-quantum encryption on every message, call, and file — so traffic recorded today can't be broken by a future quantum computer. Ephemeral by design. Delivered messages are erased from our servers the instant they reach you. Anything undelivered vanishes within 30 days. Disappearing-message options put conversations on a timer. No tracking, ever. No ad networks, no analytics SDKs, no trackers — anywhere in the app. A full messenger. • 1:1 and group chats • Encrypted voice & video calls • Stories that vanish in 24 hours • Zero-knowledge encrypted backup, unlocked only by a code you hold • Three privacy levels: Standard, Shielded, and Blackout (routes over Tor with cover traffic) Radical honesty. We tell you the exact boundary of what our servers can and can't see, in plain language, in our Privacy Policy. Say it once. Trust no server with the rest. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://talkonce.app/privacy

Sendant is a private, encrypted messenger built on a simple promise: your conversations belong to you. Messages are end-to-end encrypted by default, your keys never leave your device, there's no central server quietly logging who you talk to — and no phone number, email, or account required to start. It feels like the messengers you already know — fast chats, groups, attachments, reactions, and disappearing messages — but the trust model underneath is different. WHY SENDANT • End-to-end encrypted by default (X3DH + Double Ratchet). Only you and the people you're talking to can read your messages. • No phone number, email, or account. Your identity lives in cryptographic keys held on your device, not tied to your SIM. • Messages that don't get lost. Your message is sealed on your device and held in a store-and-forward mailbox the servers can't read, so it waits and delivers when your contact reconnects. • Less metadata. We minimize the "who talked to whom, when" trail that centralized apps collect by default. • Verify the people you trust. Confirm a contact with a QR code or safety number, and get a clear, plain-language warning the moment something changes. • No ads, no tracking SDKs. TRUST YOU CAN READ Security here speaks plain English. Sendant shows "Verified," "End-to-end encrypted," and "Safety number changed" — never cryptographic jargon. PRIVACY BY DEFAULT No phone number, email, or account required. Local-first storage on your device. Your keys stay under your control. Private by default. Calm by design.