This scenario centers on a nurse whose schedule changes faster than most routines can settle. Cheap tools lose value when they demand setup, notifications, or a streak that punishes an overnight shift.

The purchases that fit are interruptible, clear, and useful in brief windows. Her affordability test includes cognitive arrival time: if relaxing requires a tutorial, the cost is already too high.

A minute is not spare when it has to recover from the hour before it.
Calculate the attention price