CipherNotes

byPsychopath · Productivity

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8.0

android

AI summary

Minimalist encrypted notes app that stores everything locally with no cloud, accounts, or internet access. Uses PBKDF2 and AES-256-GCM encryption; biometric unlock available. Open source under MIT license.

Generated by AI. May contain inaccuracies.

About this app

Notes. Encrypted. Local. Nothing more.

Why Cipher?

- Your phone is your vault. Everything stays on device. - No accounts. No login. No tracking who you are. - Small footprint. No bloat. - Auditable. Open source. Every line of code visible. - Privacy by design. No internet permission. Zero telemetry hooks.

What it does NOT do

- Cloud sync - Account creation - Analytics - Advertisements - Internet calls (network config enforces it) - Crash reporting - Any telemetry

Privacy by design

- No INTERNET permission in AndroidManifest - Network security config blocks all outbound traffic at OS level - Passwords never stored — derived on-demand via PBKDF2 - Encryption uses: PBKDF2 (200k iterations) + AES-256-GCM - All data stays on device — Room SQLite database

License

MIT

notes encrypted offline open source privacy productivity

What's new

v2.0.2Aug 18, 2026

Bug Fixes
Links starting with www. are now properly highlighted and formatted with https:// for smooth opening in preview mode. - Fixed biometric authentication prompt still appearing after being disabled in Settings. - Fixed biometric prompt appearing when returning from the background.
Maintenance & Refactoring
Code cleanup and internal improvements.