Box Breathing - Breathe in sync with this to calm yourself down
Be Focused by XWaveSoft - Simple Pomodoro timer in your Mac's menu bar
Othership - Othership offers 500+ music-driven guided breathwork classes to lift you up and ground you down: kickstart your day, cultivate focus, fight fatigue, sleep deeper, regulate your emotions, and learn the science-backed how + why of breathing mechanics.
Focusmate - Distraction-free productivity via virtual coworking
Breathe2Relax - Breathing exercises to practice diaphragmatic breathing.
Pomodoro Timer UWP - Be more productive with your time