Need billing software

Can anyone help me find a simple invoice program for OSX Intel? Local Apple store was no help. I don't want programs like MacFreelance or Billings2 because they focus on billing multiple tasks/services to a single client. I want to be able to bill against a single project (issue of a magazine) to multiple clients (advertisers). Under Classic I used My Advanced Invoices and it was fine, but it has not been upgraded for OSX.

Thanks.

I use Simple Invoices, works well.

Thanks, LWC, but web-based won't do it for me.