Cipher Notes

What Cipher Notes is

Cipher Notes is a free Android app for encrypted notes and checklists. It encrypts notes with AES-256-GCM through Android Keystore and keeps them on the device, without accounts or cloud sync. The app works offline and has no internet permission or telemetry hooks. Notes can be styled with customizable dynamic themes and dark or light modes, and text can be shared into the app from browsers and other apps. A lost note password cannot be recovered to decrypt that note, so keeping passwords matters. Cipher Notes does not provide built-in cloud sync; the project suggests Syncthing or Nextcloud for people who want to sync files locally. It is MIT licensed, and the source code is publicly auditable. The Free plan costs nothing. The maker directs users to GitHub issues and lists [email protected] as a contact.

Who it suits

It suits Android users who want offline encrypted notes and checklists stored on their device. It may also fit people who prefer to manage file syncing locally.

Limits

The Free plan costs nothing and has no accounts or cloud sync. A lost note password means the note cannot be decrypted.

Getting started

1. Open the Cipher Notes website
2. Install the Android app
3. Share text from a browser or another app into Cipher Notes
4. Create notes or checklists and protect them with passwords
5. Use Syncthing or Nextcloud locally if you want to synchronize files

Verdict

Cipher Notes keeps encrypted notes on-device and offers offline access without accounts or cloud sync. Keep passwords safe, since lost passwords make notes undecryptable.