Well cron is “really easy” as long as your requirements are really easy too.
Run a task at specific hour or minute or weekday or whatever? Easy peasy.
Run a task at complex intervals? What the fuck is this syntax. How do I get it right even. Guess I’ll come back next week and see if it ran correctly.
Actually have to look at the calendar to schedule this stuff? Oh lawd here come the hacks, they’re so wide, they’re coming
Run a task at, say, granularity of seconds? Of course it’s not supported, who would ever need that, if you really need that just do an evil janky shellscript hack
I have a sports watch and the corresponding fitness app. I can confirm. “Sitting on one’s ass at the restaurant” is not a fitness activity. HOWEVER. Some of my activities (e.g. walks) do terminate near fast food jonts. …I dread what that kind of data analysis would yield on a major political figure.