Hey Product Hunt 👋

I built PrivaMesh around a simple question: if end-to-end encryption protects message content, why should a central service still know that an account exists, who it talks to, and when?

PrivaMesh is a serverless private messenger for iPhone. It has no account database, phone-number signup, email requirement, ads, trackers, or analytics. Identity and messaging keys live in the iOS Keychain, while contacts and chat history stay on the device.

Under the hood:

• X3DH establishes the first shared secret

• Double Ratchet creates a fresh key for every message

• Fixed-size padding reduces message-length leakage

• One-time addresses reduce linkability

• Opt-in cover traffic makes timing analysis harder

• A public, decentralized transport carries ciphertext; no PrivaMesh account server stores it

The app is open source and free to download, with optional in-app purchases for higher usage limits.

This is a different set of tradeoffs from a traditional messenger. I’d especially value feedback on the privacy model, onboarding, and everyday chat experience. What would you want to verify or improve before trusting a serverless messenger?