Utilities
Height Tracker
A private, browser-local growth tracker with WHO reference charts and optional AI-assisted record entry.
ExploreUtilities · Web product
Private Chat
Private Chat derives a room ID and an AES-GCM key from a passphrase you agree on out-of-band, entirely in the browser. Peers connect over WebRTC through a Cloudflare Worker that only ever sees a hashed room ID and ciphertext, verify each other with an ECDH fingerprint, and can start a peer-to-peer voice call. Nothing is stored on the server once the session ends.
The product
Built around a clear job.
Zero-knowledge, end-to-end encrypted messaging and voice calls in a browser tab—no account, no install, just a shared passphrase.
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