Dudou is a password-less secret manager on a zero-knowledge model. Forget the master password you can lose, reset, or get phished — you write down a single BIP-39 mnemonic phrase once, and it derives your encryption keys locally, so the server never sees them. Unlock on any device with passkeys(fringerprint), store passwords and secret notes end-to-end encrypted, autofill forms in English or Chinese, and sync everywhere. Free to start; PRIME from $1/month.
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Three things that make Dudou different:
1. Mnemonic as master key — one BIP 39 phrase. It's 12 human-readable words, so it works as a digital backup and on paper.
2. Zero-knowledge, totally — your mnemonic derives your keys locally; the server only ever stores your encrypted master key. It literally cannot read your vault.
3. Passkeys as far as possible — daily unlock is fingerprint/PIN via WebAuthn PRF, which derives your unlock key from the passkey itself. No DEUK sits in localStorage on PRF-capable devices.
Would love your take on whether mnemonic + passkey-PRF is the right trade-off.