Diarized
Who Diarized is for
The same product in each case. What differs is which part of your week is breaking, so these are sorted by the problem rather than by the job title.
Time blocking for consultants
Your calendar is client calls, and the work you are actually paid to deliver happens in whatever is left.
Time blocking when your work lives in Jira or Linear
The issue tracker is the team's, the calendar is the team's, and the hours where you actually write code belong to neither.
Time blocking when everything is your job
Nobody sets your priorities, so the loudest thing wins and the important one slides to a week that never arrives.
Time blocking around a calendar that is mostly meetings
Six hours of meetings and a to-do list written by somebody who believed there would be time between them.
Not any of these? What Diarized does and does not do is the plainest answer, and what changes if you already use a scheduler covers the rest.