CipherNotes

byChar0n · 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 supported. Open source under MIT license. Version 2.0.1 fixes keyboard security for password fields and corrects build verification.

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

v2.0.1Aug 10, 2026

Security Fixes
Secure Password Input: Explicitly forced textPassword / NumberPassword input types on all master password and PIN screens. This instructs keyboards (like Gboard, SwiftKey, etc.) to immediately disable word learning, clipboard logging, and text auto-correct while typing sensitive data. Note: Republished release to fix an incorrect Gradle wrapper checksum (distributionSha256Sum) and remove the foojay plugin. The source code tag now properly aligns with the release binary.