Micro Timer is a macOS menubar app for running named countdown timers. You create a timer, give it a name, set a duration, and it counts down in your menubar. That's the whole app.
Unlimited. There's no cap. Create as many timers as you need and run several at the same time.
Everything lives in the menubar icon. Click it to see all your timers, start new ones, or manage existing ones. No Dock icon, no separate window to manage.
Cooking, Pomodoro sessions, workout rest intervals, meeting reminders, boiling an egg, steeping tea, reminding yourself to stand up. Anything with a duration.