Shopify’s bulk import only accepts CSV, while you can add TXT, CSV, XML, XLS(X) and JSON to Syncee.
Shopify's feature cannot be scheduled, but you can easily schedule the running of your task with Syncee whenever you want, any time you want.
With Shopify's bulk import you cannot add price margin or convert the currency, but you can do it with Syncee.
Moreover, it cannot be used in case of a bigger amount of products, because the system easily gets frozen.
If you need more information, let us know.