A Timer, in it’s simplest form, is a way for a user to keep track of how much time they are spending on a particular task, project, job, etc. This can be automatic, in the form of what is essentially an online stopwatch that you start when you begin your work, and stop when you complete the work, or it can be a manually entered amount (in hours and minutes) that you have previously tracked and just need to record. In either instance, completed Timers can then be transferred into invoices in the form of “billable hours”, and your client can be automatically billed for the time you spent.