Sync is easy on day one and quietly wrong on day ninety: a webhook is missed, a variant renamed, an edit lands in the wrong store. StoreTwin copies products, variants and stock one way, from the store that owns the catalogue to the store that sells it. Then it keeps checking: hourly for what changed, nightly the whole catalogue, field by field. Differences are named by product and field with both values, and repaired. Nothing is ever deleted, and nothing is copied until you approve it twice.

• Hourly and nightly checks compare both catalogues field by field
• Every difference is named by product and field, with the value from each store
• Nothing is ever deleted in either store, by design
• A product it cannot match with certainty waits for you instead of duplicating
• Stock is compared per location: the locations you choose, added up