Fitmer — Tabata Timer

FITMER turns your browser's side panel into a focused interval timer — built for Tabata and HIIT, and just as handy for work breaks and focus sessions at your desk.

No setup, no sign-up, no internet needed. Open the side panel, set your intervals, and go.

WHAT YOU GET

• Classic Tabata structure: Work / Rest intervals × rounds, with an optional get-ready countdown

• Big, clear phase display with a color-coded ring (green work, blue rest) and round progress dots

• Audio cues — a tick countdown on the final seconds and a gong at every interval and at the finish — so you never have to stare at the screen