Cipher Notes

Privacy-first Android notes app with on-device AES-256 encryption and no accounts.

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Cipher Notes is an open-source Android notes app that encrypts everything on-device with AES-256 and requires no account or internet access. It's built for privacy-conscious users who want a small, auditable, offline-first alternative to cloud notes apps. There's no cloud sync by design; users who want sync are pointed to self-hosted tools like Syncthing.

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Problem & pain-point mapping
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Trust & credibility signals

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