What are some alternatives?
When comparing Invoice Maker and Free Invoice Generator, you can also consider the following products
Invoice Template - Create beautiful looking invoices in seconds
Invoice.to - A simple & beautiful invoice generator with Stripe & Paypal
Envoice - Send invoices and get paid on Paypal, Payoneer, Stripe and Square.
Bookipi Invoice App - A minimal, beautiful invoice app for freelancers
Billdogg - Beautifully simple invoicing for freelancers
Invoice Quick - Professional Invoices Made Quick and Easy