If you need order invoices then you can use Order Printer - Shopify’s free invoicing app that can be customized to your liking. We also have documentation for the app in our help centre here.
Lenka from Sufio here, let me break down the reasons why Sufio can be helpful for your online business:
In Sufio, you can create invoices by customizing the colors and elements of your template.
We are a Shopify partner and upon your approval, we can access your Shopify. Therefore, not only can we help with your invoices, but also with your online business!
We are able to set the most advanced invoice automatization. For example, we can do customizations that generate only certain invoices based on your criteria; type of client / country or including taxes etc
The app supports several languages and currencies. For every country that we support and its currency, we have co-operated with local accountants to make sure our services are legal & business compliant.
If you have any questions, feel free to get in touch at support@sufio.com!