Import listings from Etsy to Shopify
In case you are looking for quick wins and free apps, so I have some great news for you !
Shopify has developed a great app named "Store Importer" , it imports listings seamlessly from Etsy to Shopify.
All you need to do is download your Etsy listing to CSV and upload it via Shopify app.
Here is the link to Shopify tutorial Migrating from Etsy to Shopify
Try it out!