I was using Curdbee. They have been acquired by another company called Hiveage, and we had to migrate our accounts there. So that's what I am using right now.

I was using Curdbee. They have been acquired by another company called Hiveage, and we had to migrate our accounts there. So that's what I am using right now. I just needed a simple invoicing app which generates and sends clean invoices, so their free plans work perfectly for me. Links: http://www.curdbee.com http://www.curdbee.com http://www.hiveage.com/ http://www.hiveage.com/