Who actually uses these products,
and what made them stay.

The Toggl Self-Tracker

A freelancer, consultant, or productivity-conscious knowledge worker who tracks time for one of two reasons: they bill by the hour and accuracy is revenue, or they've realized they have no idea where their hours go and they want to find out. Both types start Toggl for practical reasons and discover something unexpected — tracked time is honest in a way that memory and intention are not. They've had the experience of thinking they spent 4 hours on a project and the timer saying 2.2. They've also had the reverse. Both were useful information.

“It happened mid-workflow — they're a UX consultant.”