Billings is good at tracking time, but there are deficits in some most important things:

1. Creating fully-customizable invoices isn't that easy because there is absolutely NO documentation on creating customized invoice templates, just a poor video that explaines things you can find out by yourself in about 10 minutes.

2. There seems to be no support for technical problems. I've written several emails, used their so called support contact form, etc., never got any answer.

What good is an application that can gather all necessary data for an invoice but doesn't let you create customized invoices hence you cannot send invoices to your clients?

And 59 bucks is a lot of money for just a time-tracking application.