Private. Secure.

End-to-end encrypted messaging. Cross-platform, fully under your control.

Open Web App web.cing.app Download for macOS v1.0.0 · Apple Silicon
Android Coming Soon
iOS Coming Soon
Windows / Linux Coming Soon
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End-to-End Encrypted

Double Ratchet algorithm with AES-256 and Curve25519 key exchange. Each message independently encrypted with forward secrecy. Zero server knowledge.

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Cross-Platform

Use Cing on the web today — desktop and mobile apps are rolling out. One account, synced everywhere.

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Forward Secrecy

Unique keys generated per session with periodic rotation. Past messages remain safe even if future keys are compromised.

🔒E2E Encrypted 👁️‍🗨️Zero Knowledge 📡Open Protocol 🔑Secure Auth