Currently, Syncio is not able to auto-add new products.
However for Shopify accounts only, Syncio is able to auto-add new variants whenever the source store creates them and applies an unique SKU.
New Source store products will need to be manually added in the Sync Products tab in the Destination store Syncio Dashboard. Keep in mind; this is only for New Products. You can auto-add and delete product variants if you have our Sync Settings Add-On. Available only on the Shopify integration.