The best alternatives to Invoice Dragon are InvoiceApp, Invoicy.io, and PDF merge API. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of Invoice Dragon?
General Collaboration— One inbox for all your work discussions
Free invoice generator. 10 different PDF templates, possibility to customize the invoice (logo, color, currency, discount, tax). Also after the invoice is created, you can save the pdf, send a link or e-mail.
GoSet is a time tracker for your daily work. It can create time sheets in various formats including CSV, JSON and PDF. What makes GoSet different from other tools is, it works completely offline.