Syncsafe

Syncsafe keeps inventory in sync between two Shopify stores, one way, matched by SKU.What makes it different is what it refuses to do. Every stock change goes through a validation gate before anything is written: it checks the SKU resolves to exactly one variant in the other store, that the result is not negative, and that the change is not big enough to look like a mistake. Anything that fails is recorded and held, not written — and the app names the check that refused it.