Been looking for a good invoicing app of a while now and after bouncing around between iRatchet (the old non-App Store version, since you can't get a demo of the newer version), iBiz, and Billings, I finally settled on Billings - mostly because it handles hourly invoices extremely well and has an awesome iOS counterpart!

There is a lot to configure at first, which can be very overwhelming - especially when trying to setup your own customized invoice design, but once you get things set up it works pretty well.

There are a couple of quirks and annoyances preventing me from giving this five stars. First and foremost, invoices are numbered as an overall total, and not on a per client basis. In addition, you can't renumber an invoice, and the total continues up even if you delete an invoice (i.e. you create an invoice which is numbered 180, then you delete for whatever reason, create a new invoice it is numbered 181 even though invoice 180 no longer exists). Fortunately this can be resolved by using a custom field, but would still be nice if you didn't have to manually enter the invoice number each time.

Sorting through invoiced projects is difficult as well, as there is no way to group paid and unpaid invoices - you can use the reporting function, but that can be more complicated than it's worth.

Finally, and this is the biggest annoyances, there is no way to discount an invoice by a fixed amount, Billings only supports discounting by %.

While these seem like a lot of complaints, I do like the program overall - once you get it set up to your liking it makes keeping track of all your invoices quite painless, add to that its iOS counterpart to create invoices on the go, this is a pretty good invoicing program border lining on being great.

wow, you can't change your star rating here can you... i was going to downgrade the ease of use, on second thought, because creating your own custom template is not at all intuitive, sorta clunky imo.

but re: comment below about not being able to bill various projects monthly... the solution for that is to create a project called, for example, CLIENT - January; then each slip in that month is a different project. you can put details re: the slip work in the slip log. and you can combine slips into a single invoice when the time comes, simple by selecting multiple slips in the create invoice area.

you can change invoice number in the create invoice area as well...

What the... I've had this update for weeks now!

The interface is beautiful, and it has a huge edge over other invoice software in that regard. But what makes the application useless for my needs (and judging by their forums a lot of others) is the complete lack of flexibility for numbering invoices.

I was initially impressed with Billings as I am a designer and loved the interface, but as soon as I had to bill a client, I left the software and went back to On The Job for my time tracking and invoicing. Here's why:

You cannot invoice a client for a month's worth of work. You are forced within the constrains of a "slip." There is no flexibility. This is a huge flaw in the program in my opinion. I have many clients that have multiple projects, and I just bill them per month for my work. I just need a program that has different filtering mechanisms that allow me to bill per time, per project or per client.

Billings was rendered worthless as soon as the above mentioned problems were revealed. This is sad as I loved the interface, but above all else, I need function before form.

Installed 3.5.2.......won't open now. Every time it opens it says that application unexpectedly quit........