I could not agree more. Colleague Natalia Nowak, now writing for Mac360 for more than 14 years, on a favorite iPhone app that should be on the Mac.
So where in the Charles Dickens is Clock for Mac? Clock is a very special, highly useful, much regarded app that nobody talks about much. Use it to set reminders, or, as an alarm clock, a stopwatch, a timer, or, and this is remarkable– a bedtime alarm.
I use Clock everyday. It needs to be on macOS, with an option to sync via iCloud to other devices.