[joshuamorton]

Another way of putting this might be "charge by the sprint".

You don't track your time specifically, you do report back on your progress each week/two, and the company makes renewal decisions off of that. The point is to not subdivide the week.

[seanwilson]

Can you explain more how this works? So you get paid upfront for a e.g. two week sprint where you say what you think you'll get done in that sprint and the client picks if they want to renew for the next sprint based on a progress review at the end?

How does this work out if you finish all the tasks in the sprint really quickly or barely finish any in terms of client happiness? What are the benefits over charging per day or week?