MasterKey

MasterKey is a privacy-focused, 100% offline password manager designed to securely store:

- Passwords (email, social, apps, servers) - Credit/debit cards (Visa, MasterCard, etc.) - Crypto wallet secrets & keys - Secure collections for organizing your data

With a sleek modern Material You interface, MasterKey offers a no-ads, distraction-free, highly secure experience — entirely offline and completely private.

End-to-End Encryption

- All your data (passwords, cards, keys) is locally encrypted using a key derived from your Master Password. - Your Master Password is NEVER stored — not even on your device.

In-Memory-Only Processing

- The Master Password and decrypted data exist only in memory while the app is open. - Once the app is closed, all sensitive data is wiped from memory. - What remains on disk is encrypted, and without the Master Password, it’s unreadable.

100% Offline & Local Storage

- MasterKey does not connect to the internet — ever. - No remote servers, no cloud syncing, no analytics, and no background tracking. - Your data never leaves your device.

Unbreakable Protection (Quantum-Level Difficulty)

- The encryption used is strong enough that breaking it would require quantum computing power, which is not publicly available yet. - Even if your device is hacked, no one can access your data without your Master Password.

Why Open Source?

We’ve made MasterKey open source so that:

- Anyone can audit the code and verify how it works. - Developers can contribute and help improve security, features, and performance. - The community can build trust through transparency.

Your privacy is our mission — not just a feature.

No Third-Party Services

Unlike many apps that integrate:

- Google Analytics - Firebase - Crashlytics

We’ve intentionally avoided all such third-party tools. Your usage data stays with you, and your activity is not tracked. We prioritize your privacy over developer convenience.