https://chromewebstore.google.com/detail/new-tab-studio-countdown/epngggilgnflanfabeldfpbgponcgpgl
New Tab Studio: Countdown & widgets - Chrome Web Store
New tab widgets: Countdown timer, Exam, Uni, Todo List, Habit tracker, Notes, Dashboard, Photos, Deadline
new tabcountdown widgetsstudiochromeweb
https://prettyprogress.app/
Pretty Progress - Countdown widgets on your iPhone
Beautiful timers and countdown widgets on your iPhone's Home Screen and Lock Screen. Track and remind yourself about the important things.
countdown widgetsprettyprogressiphone
https://getsitecontrol.gitbook.io/gsc-countdown-timer/create-widgets
Create Widgets | GSC Countdown Timer Bar
countdown timercreatewidgetsgscbar