Offline first
No network permission is required to use the vault. It unlocks and works with the radio off.
Android 8.0+ · v1.1.0
2CR Blueprint
Offline encrypted vault
A credentials, keys and notes vault that works fully offline. When you choose to sync, the server only ever holds ciphertext it cannot read. A duress password opens a second, indistinguishable vault.
3.7 MB · Sideload only · Not on Google Play
Vault
Blueprint
Search
- WWi-Fi routerNetwork
- MMailboxLogin
- RRecovery codesNote
- OOffice keyPIN
Design
Built so the server cannot read you
Zero-knowledge
Passwords never leave the device in the clear. Cloud sync stores ciphertext the server cannot read.
Duress vault
A second password opens a second vault. To anyone watching, it looks like the only one.
Hardware-backed keys
Key slots wrap in StrongBox or TEE. There is no stored password hash on disk to crack.
- Zero-knowledge
- Argon2id
- AES-256-GCM
- Hardware-backed
- Decoy vault
Latest release
2CR Blueprint 1.1.0
Inline monospace formatting for notes and custom fields — select text, format, then tap to copy.
Android 8.0+ · 3.7 MB · APK
Sideload
Install in three steps
- 01
Download the APK
Use the button above. The file is served from this site — no store account required.
- 02
Allow the install
Android will ask you to allow installs from your browser or files app. That setting is per-app.
- 03
Open the package
Tap the file, then Install. 2CR Blueprint is not on Google Play.