Keygrain

Deterministic password derivation. One secret, all your passwords.

Enter your master secret + email → get a unique, strong password for any site. Same inputs always produce the same output.

How it works

• No password storage — passwords are recomputed on demand
• Change length, symbols, or salt → entirely different password
• Encrypted config backup (optional)

Download

Scan to download the Android app:

Direct download (APK)