Synder for QuickBooks & Xero

This is the only app we found that syncs individual sales receipts on the payment capture date and time and not the order date and time, so non domestic currency transactions sync accurately to the cent with zero discrepancies. Other apps always resulted in annoying 1-50 cent discrepancies post sync and correcting them wasted so much time.

A pricey app compared to others but if you're selling in multiple currencies with multiple processors (eg Shopify payments and PayPal) then this app is absolutely essential and will save much more in time than the $65 hit.