My Shopify products are set to "Manual" fulfillment, and then Shipstation auto sends a fulfullment request to Amazon to send that product through FBA.
What app can I use that will sync my Amazon FBA inventory with my Shopify inventory (so I don't have to manually update Shopify's inventory everytime I get an FBA order), without using that app for the actual fulfillment requests?
I created an app www.linksisapp.com that lets you import and continuously sync your Amazon FBA inventory with your Shopify store. You can import as many products as possible and can do more with the app. Let me know if you have any question and I will be happy to answer them.
I've also made an app that will sync your Amazon and Shopify inventory. We've got over 1800 users and 85 positive reviews in the Shopify app store. You can checkout ByteStand here.
We have an app that auto syncs inventory and also places orders to Amazon FBA.
Please check on Amazon and Shopify Appstores.
Let me know if you need a help?