Qlavis: Post-Quantum Messenger
Private chats. No phone number
Only for iPhone
Free
iPhone
Post-quantum protection for messages, calls and your identity: encryption and signatures built for the quantum era. No phone number or email, just 24 words only you hold.
Qlavis is a messenger where everything is sealed with post-quantum cryptography: messages, voice and video calls, photos, videos, documents, and profile photos. Your identity too: it carries a post-quantum signature of its own. End-to-end encrypted from the first minute, with nothing to configure.
No phone number, no email.
Your identity is created on your iPhone as a 24-word recovery phrase that only you hold. Nothing to verify, nothing to register. Your keys never leave the device, protected by the Secure Enclave, so nobody, not even Qlavis, can read your messages or pass themselves off as you.
Built for the quantum era
Behind every conversation stands the complete NSA CNSA 2.0 algorithm suite: ML-KEM-1024 key encapsulation, AES-256-GCM encryption, ML-DSA-87 signatures, and SHA-512 key derivation. Key encapsulation and signatures both run at NIST security Level 5, the highest category defined, so what you say today stays unreadable to the computers of tomorrow.
A signature instead of a promise
The signature on your identity is ML-DSA-87. The other side checks it on their own device rather than taking the server's word, so no future computer can pass itself off as you or forge who said what.
Calls, not just messages
Audio and video run on the same post-quantum keys as your chats. A call that cannot establish them does not connect: that is a condition, not an option. If you wish, turn on relay mode and the other side never sees your IP address.
Rooms for your people
Create a room, add members by @handle, hand out roles and decide who can post. Text, photos, videos and voice messages in a room are encrypted the same way as in one-to-one chats. Every membership change is signed and verified on each member's device, the room's name and photo are encrypted too, and the only way in is an invitation: there are no public links. The Room Seal, a short code every device computes on its own, lets members confirm they all see the same room.
A server that sees nothing
Our server is a blind relay: it stores no message content, cannot decrypt a single byte, and deletes encrypted envelopes the moment they are delivered. What we never hold can never be leaked, sold, or handed over.
Everything you expect
• Text, voice messages, photos, videos, and documents
• Read receipts and delivery status
• Encrypted profile photos
• App lock with Face ID
• Qlavis Screen: screen-recording and screenshot protection for your chats
• All local data encrypted at rest on your device
An optional wallet
Crypto, right in the chat: send XLM, USDC, XRP, or RLUSD inside a conversation, encrypted like any other message. Keys are generated on your device, never leave it, and belong to you alone. Qlavis never holds funds, has no access to them, and charges no fees.
An open protocol
The full protocol specification is published at qlavis.app/architecture.html. The protocol design, rooms included, has passed formal verification, and the server's behavior is tested continuously in production.
Privacy Policy: https://qlavis.app/privacy.html
Terms of Service: https://qlavis.app/terms.html
Support: https://qlavis.app/support.html
Voice messages start recording faster, and the message appears right after you let go. Media auto-download now works exactly as set for every photo, video, voice message and document: Always on any network, Wi-Fi only on Wi-Fi. Received photos and videos are saved to Photos by the same setting, and an opened photo or video has a Save button. To save, Qlavis asks only for permission to add to Photos. In a new chat the first messages sit at the bottom, just above the text field. The speaker no longer switches back to the earpiece when the other person answers or when you return to the call screen, and the ringing tone is louder. A call on an app locked with Face ID now shows the call screen and the return-to-call bar. Fixed: mute turned on from the iPhone call screen while a call was connecting was lost once it connected; a contact's Qlavis Screen could fail to reach your phone while Qlavis was closed; in rooms, a member's messages could stop opening after their keys were renewed. Delivery is more reliable: a message that arrives late or after a key change now opens, and an interrupted secure session recovers on its own.
The developer, Qlavis, Inc., 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 Linked to You
The following data may be collected and linked to your identity:
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Qlavis, Inc.
- Size
- 60.7 MB
- Category
- Social Networking
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later.
- iPhone
- Languages
English and 2 more
- English, Russian, Spanish
- Age Rating
18+
- 18+
- Contains
Messaging and Chat
- Copyright
- © 2026 Qlavis, Inc.
