Post-quantum instant messaging, at the heart of a complete workspace

One-to-one and group conversations, reactions, attachments, several devices per account: a modern messenger, end-to-end encrypted — and around it, the Drive, notes, and automations of the same workspace.

ML-KEM-768 · ML-DSA-65
post-quantum encryption

Blind Relay: confidential by construction

Each message is encrypted on your device and decrypted on the recipient's. In between, our Blind Relay architecture only carries opaque, uniform envelopes: the server can neither read your content nor tell a message from a file or a note. Confidentiality is not a promise — it is a property of the architecture.

Built for work

Groups, reactions, attachments, multi-device and multi-profile on a single terminal: the habits of a modern team messenger, with no compromise on confidentiality.

Resistant to quantum computers

Every message is protected by NIST-standardized post-quantum cryptography. What is exchanged today is designed to stay confidential tomorrow.

Messaging

End-to-end encrypted conversations

Write to your contacts knowing only you and they can read the exchange. Messages are encrypted on your device before sending, and synchronized across your devices.

→Validate a sensitive decision with your accountant without going through email.
→Discuss a case covered by professional secrecy.
→Alert the on-call team without exposing incident details.

Groups

The same protection, together

Group conversations enjoy the same cryptography as one-to-one exchanges. Creation, invitations, and member management go through the same encrypted channel as everything else.

→A crisis channel limited to authorized people only.
→The executive committee and its confidential exchanges.
→A project team including an external subcontractor.

Drive

Your files, encrypted and synchronized

Create, open, rename, move, and delete your files from any of your devices. The tree and the contents are encrypted; multi-device synchronization is validated end to end.

→Case documents consulted from the office and from the courtroom alike.
→Plans and quotes opened right on the construction site.
→Your accounting exports archived every night by the CLI.

Notes

A notepad that stays private

Take notes inside the app: they are encrypted and synchronized like your files, with no third-party app.

→The minutes of a confidential meeting, taken on the spot.
→The technical references for an intervention, at hand.
→An idea jotted down between two meetings, found again at the office.

Media

Protected photos and documents

Send photos and documents in your conversations and keep them in the Drive, with the same encryption as everything else.

→Photos of damage sent to the insurer.
→An ID document exchanged without going through email.
→Site photos kept and dated.

Automations

Code on your data, without exposing it

Write code, declaratively reference Drive files, and run it in your device's sandbox. The result comes with its fingerprint. This is the first building block of the Code-to-Data model.

→Check that no duplicates slipped into a client export.
→Compute totals on a statement without taking it out of the Drive.
→Produce a summary with its fingerprint, ready to share.

Multi-profile

Multiple isolated accounts on one device

A single device can host several accounts, each with its own keys and its own encrypted space, strictly isolated. Ideal for shared workstations.

→The front-desk tablet shared between practitioners.
→The counter workstation used by three agents.
→Work and personal use strictly separated on one phone.

Blind Relay

The server is a blind relay

Every feature — messages, groups, files, notes, media — travels through the same channel as encrypted envelopes, presented in a unified cryptographic format with no readable business content. That is the Blind Relay architecture: a server compromise does not, by itself, allow reading your end-to-end protected content. The technical metadata required to operate the service is documented on the Security page.

Unified format · content unreadable by the relay · documented metadata

Also available: the CLI

For integration and automation, the AKARUP CLI carries the full Drive stack, interoperable bit-for-bit with the app.

Learn more

Try AKARUP

The app is available today on iOS and Android.

App Store Google Play

Desktop version planned for August 2026.

Questions?

Let's talk about your use, personal or professional.

ML-KEM-768 · ML-DSA-65 · XChaCha20-Poly1305 · Argon2id