TalkOnce - Private Messenger
Post-quantum private messenger
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Post-quantum end-to-end encryption. No phone number, no email, no name. Messages that disappear. TalkOnce holds no keys and collects no personal data.
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
Ratings & Reviews
The developer, TalkOnce, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- TALKONCE Corp
- Size
- 114.4 MB
- Category
- Social Networking
- Compatibility
Requires iOS 15.5 or later.
- iPhone
Requires iOS 15.5 or later. - iPad
Requires iPadOS 15.5 or later. - iPod touch
Requires iOS 15.5 or later. - Mac
Requires macOS 12.4 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
16+
- 16+
- Contains
Advertising
Messaging and Chat
User-Generated Content
- In-App Purchases
Yes
- Pro Monthly $14.99
- Pro Yearly $149.99
- Plus Yearly $69.99
- Plus Monthly $6.99
- Copyright
- © 2026 TalkOnce Corp