Oxilayer PDF Invoice Generator

Update: this app is now even more incredible. In the last 4 months, the creator has done a lot of updates and I can't imagine it being even better than it was, but here we are! If you're looking for a fully customizable invoice/receipt/refund receipt generation app that does even more, look no further!!!!!!

This is THE invoice/receipt pdf creation app to have. It literally has everything I have ever wanted in such an app. I can say that I have tested every app that does similar things out there and this is the one I am keeping. The support is honestly second to none. They are super fast at implementing requested features and are constantly improving their app. I can't be happier after having found this app.