Local-first apps that feel instant.
Reads hit an in-browser store, writes apply optimistically, and everything reconciles with the server in the background. Your app stays responsive offline and syncs the moment it reconnects — without you writing a sync layer.
Snappy, offline-capable apps usually mean hand-building a local cache, an optimistic-update layer, a conflict-resolution strategy, and a reconnect protocol — and then debugging the races between them for months. It's the hardest part of the product and it has nothing to do with what makes the product special.
Optimistic writes, reconciled
Mutations apply to the local store immediately so the UI never waits on the network. The sync engine tracks each pending op, reconciles against authoritative server state on ack, and rolls back cleanly if a policy rejects it. The race conditions are solved once, in the engine, not re-solved in every component.
Offline queue, automatic catch-up
Go offline and writes queue locally; come back and they push in order, then the client pulls anything it missed. A snapshot-plus-delta protocol keeps catch-up cheap even after a long disconnect, and per-op tracking means nothing is double-applied or lost.
Multi-tab and multi-device coherent
Open the app in three tabs and they share one connection via a leader election over BroadcastChannel, so they stay consistent without three sockets. Across devices, the same typed database is the source of truth, gated by the same row-level policies.
Ship it on Pylon.
Scaffold an app in seconds, deploy free on Cloud, scale when you need to.