Estuary vs Fivetran: Postgres to Snowflake Replication Compared

Estuary is positioned as the better fit for Postgres-to-Snowflake replication when freshness under one minute is required or when costs should track captured and delivered data volume. Fivetran suits teams whose rows update repeatedly each month and who can work within the sync intervals set by their plan. Estuary bills per GB captured and delivered plus a per-connector fee, while Fivetran bills by monthly active rows, counting each distinct row once per month regardless of updates. Both tools use Postgres write-ahead log changes, though Estuary requires logical replication and offers a batch connector fallback, and Fivetran also supports a query-based fallback. The comparison suggests that the choice depends on update patterns, freshness needs, and whether the database supports logical replication.