Oxilayer PDF Invoice Generator

Probably the most versatile invoicing app out there. I deleted the app a while back when Shopify came with their own VAT invoices. But (as with many things) Shopify makes is practically impossible to use it. So I installed Oxilayer again. Instantly a relief from my clients getting an invoice in their email after paying. Everything works SO well. The options you have in the backend is very broad, as well as the templates. Would 100% recommend!