Managing millions of tasks, Todoist is an online task management app and todo list. It has Web, iPhone, Android, Chrome, Firefox, Outlook flavors (and more!).
Put client bill decisions where the next finance owner works.
Your finance team sees the decision and next step in its task, with a link back to the bill.
Create an assigned follow-up for each unapproved bill due soon.
Get clear follow-up tasks for bills nearing payment, so your payables person knows which approvals to chase.