If this sounds like your week
The timer loses when it lives in the wrong place.
Most Pomodoro tools can count down. The practical difference is whether you can still see the countdown after you open your IDE, browser, document, meeting, or reference material.
Where tooling usually breaks
Tabs compete with intent.
The moment a timer becomes another tab, it competes with documentation, chat, dashboards, research, and every other tab that already pulled you away.
Visibility ladder
Browser tab -> easy to bury Tray icon -> easy to ignore HUD overlay -> time stays in view