Quickbooks is nice if you're an accountant who likes entering stuff into tables. But I am not an accountant and I'm bad about keeping on top of my accounts. It takes too many clicks to send a stupid little invoice once in a while.
This is a space that could really use chat bot support. I want to quickly type something or go through a wizard to do my accounting. "Hey Accounty, can you send Client B an invoice for The Big Package at $200 for 12 months? Make it recur annually". And Accounty goes and sets everything up and sends the emails. No interface. Completely automated. When an account is overdue, it'd message me and say "Hey, Client A is overdue, shall I send a reminder?" If someone replies to the invoice email, it'd say "Hey, Client C replied to the invoice and asks 'Can I pay later?', how do you want to respond?". Wire that up Siri or some other speech to text engine and I can do my accounting on the drive in to work.