Pricing

One engine. Four ways to run it.

Every tier ships the same offline-resilient core. Start free, stay free on localhost and preview deployments, and pay only once you're shipping features to production.

Free

$0/ forever

Core IndexedDB engine, SNAPSHOT/COLLECTION_ALL caching, and the offline write queue, production-ready from day one.

  • 10k monthly events quota
  • 1 production domain
  • SNAPSHOT + COLLECTION_ALL ingestion
  • Basic service worker caching
  • Single fire-and-forget queue replay
Most Popular

Starter

$9/ app / month

The full mutation pipeline, conflict resolution, and complete multi-tenant session security,everything Flux does, on a single production domain.

  • 100k monthly events quota
  • 1 production domain
  • Parallel image prehydration
  • Safari BlobRegistry eviction fix
  • Cross-tab Web Locks + bootstrap leader election
  • LRU cache strategy
  • Video prefetch
  • Clock skew correction
  • Mutation pipeline (coalesce/debounce)
  • Multiple offline queue channels
  • Job tracker (realtime + polling)
  • Two-pass handshake replay
  • Universal conflict register
  • Full multi-tenant session security (boot sweep + cross-tab teardown)

Pro

$19/ app / month

Same engine as Starter, unlocked across multiple production domains with 5x the event quota,for teams running more than one app off one key.

  • 500k monthly events quota
  • Multiple production domains
  • All Starter tier capabilities
  • Email support

Enterprise

$199+/ month flat

Everything in Pro, uncapped for teams running at scale.

  • Unlimited monthly events
  • Unlimited apps under one key
  • All Pro tier capabilities
  • Usage dashboard + SLA
  • Slack support
  • Priority key-leak scanning

Free on localhost and preview deployments (*.vercel.app, *.netlify.app, *.pages.dev) — no console watermark in any dev environment.