BillBuddy started as a project for myself, where I found that it was a big hassle to keep track of all invoices I received without manually processing them and filling in the amounts in my own bookkeeping software.
Instead of now having to open every invoice, I simply forward the invoices an let BillBuddy do the reading. Once per month when I do my taxes, I log in, run an export of the parsed data and see all the data I need at a glance.
This way I know what I spent and my quarterly tax-forms are filled in much more easily.
That's the backstory and how BillBuddy turned out to what it is today, where I feel it mostly supports small companies of which the bookkeeping is not too complex but a small hand comes in useful.