It's also my experience that break reminders prevent wrist pain. For macOS, I recommend Time Out. Actively maintained, with all the options you'd want. https://dejal.com/timeout/. - Source: Hacker News / 10 months ago

Time Out is free, but you can donate for extra options, which I personally do. This is one of these succesful macOS apps that just keeps being updated every year or so. I don't have any affiliation with the maker, I'm just a happy user. Download it here: https://dejal.com/timeout/. Source: about 1 year ago

A workaround in the meantime is to switch to the direct edition of the app. But hopefully the fix will be available soon. Source: about 1 year ago

Not sure if it will fit your needs since it is not a pomodoro app but you can try TimeOut https://dejal.com/timeout/ as well. Source: over 1 year ago

I'm pleased to introduce the first beta of an update to my popular break reminder tool for macOS, Time Out. Version 2.9b1 includes several much-requested enhancements:. Source: about 2 years ago

Working in PowerShell (.Net regex) one of my favorite tools is https://ultrapico.com/expresso.htm. It does require registering for a free license but it's well worth it. Source: about 2 years ago

Then you need this or something like it: https://ultrapico.com/expresso.htm. Source: over 2 years ago