No Accounts.
No Numbers.
No Storage.

QRYPTUS is a messenger built to forget. Your conversations live only on your two devices — never on a server.

PASSKEY PROTECTED · P2P ENCRYPTED · ZERO TRACE

No Accounts
No Phone Numbers
No Message Storage
Passkey Protected
P2P Encrypted
The app

Encrypted by default.
Verified by you.

  • Fingerprint verification
    公開鍵を別経路で照合し、なりすましを防止。
  • Ephemeral by design
    24時間で自動消滅。痕跡を残さない設計。
  • AES-256-GCM
    業界標準の認証付き暗号で全メッセージを保護。
A
Anonymous Source #07
● Verified · Online
🔒 E2E · AES-256-GCM ⏱ 24h
Channel open. We are secure.
Documents ready. Did you verify the fingerprint?
Yes. A3F2 B7E9 matches on my end.
Good. Everything self-destructs in 24h.
Type encrypted message…

How QRYPTUS works

Four steps. Zero servers in the middle.

Under the hood

Keys seeded by
quantum entropy.

Session keys are seeded with true randomness from the ANU Quantum Random Numbers API — not a software pseudo-random generator.

Read the security model
ANU QRNG
Open security model

Don't trust us. Verify us.

Every claim on this page maps to a real, named mechanism. We document what we do — and what we deliberately don't.

PASSKEY WEBRTC AES-256-GCM QUANTUM ENTROPY
Explore the model

Say it once.
Leave no trace.

Available as a progressive web app. No store, no install friction.