Launches, deep-dives, design essays, and engineering retrospectives 鈥?written by the people who shipped the work.
Our generative engine graduates to v4.0 with seeded determinism, GPU-accelerated audio synthesis, and a new motion-grammar compiler. Every app in the matrix inherits the upgrade.
Read release notesA practical look at CryptoKit, Secure Enclave, and how we keep keys off-device-risky surfaces.
Read deep-diveSub-frame budgets aren't a luxury. They're the difference between tools that feel inevitable and tools that feel "fine."
Read essayEncrypting on the client, syncing through a dumb pipe, and never letting the server see a byte of plaintext.
Read paperEnd-to-end encrypted document sharing for spouses, attorneys, and co-owners. Local-first, zero-knowledge.
Read releaseThe team grows with engineers who share our obsession for craft. Read their stories and what they'll ship.
Read announcementHow we picked Yjs, what we customized, and the trade-offs we accepted to make multi-device sync feel invisible.
Read technical postA taxonomy of choreographed motion, and the rules we follow so every transition means something.
Read essayTransparency as a feature. How we expose every byte to the user, and what they can do with that knowledge.
Read articleWe respond to thoughtful, specific requests within 48 hours. Briefs to contact@songzejiancai.com.