Syncsafe

• Every stock change is checked before anything is written to the other store
• Refuses writes that would zero or wreck your stock, and tells you why
• Matches variants by SKU, and flags duplicates instead of guessing
• A permanent record of every stock change and why it was or was not written
• Fix a mapping and resync — nothing is lost while it is blocked

Sync stock between two stores. Syncsafe checks every change and never writes a bad number.

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.