I like that it's very easy to set up, use for my clients as well! It helps with getting their payments in fast which makes life easier all around!! The fact you can see how much money they are owed so far into each month without actually having paid any of them yet has been great too because when time comes we have our proof easily available already instead if waiting til end-month just hoping everything was correct :) No downsides really but maybe adding more templates? Maybe add some pre made invoice layouts or something along those lines would be nice.. Just go ahead - give this one chance! For everyone who wants ease & speed at setting things straight right away (and no hassle) then surely try out Oneclickbusiness. Solving problems related directly from billing process through payment reminders etc., saving loads/time wasted due slow processing speeds / delays during day by mailman etc., I like that it has a lot of features, it's easy to use, I can customize my invoice templates and send them to my customers easily.The cost is a little bit high but you get what you pay for. There are some bugs in the system which I think need to be fixed. It could be better if they added more features. The good thing about this app is that it allows me to send my clients my proposals and invoices.