Periodee
Periodee is a Apple Watch app, and it measures sessions such as lectures or seminars that consist of multiple periods. Periodee displays the remaining time (with a circular graph), and session/period information of the current time.
Unlike the timer app, no need to start or stop measurement.
In the example above, a session “Weekend” is being measured and the current time is 9:45. The period “Period 1” is set to 55 minute length (50 minutes lecture and 5 minutes interval, and it starting at 9:35), indicating that the lecture time is 40 minutes remaining.