Taimaa

Set hours, minutes and seconds, press start, and the countdown runs in the browser. Taimaa is a Japanese-language timer — the interface and all of its explanatory text are in Japanese — and the site presents it as something usable immediately on a desktop or a phone without registration.

The controls cover the ordinary cases. Start begins the countdown straight away, a pause can be resumed from the same remaining time, and a reset clears it. When the remaining time reaches zero the display switches state, and an end sound or a browser notification can be selected. The page also notes that returning to the tab re-syncs the remaining time, so a timer left running in the background still shows the correct figure when you come back to it.

The suggested uses listed on the page are everyday ones such as study and reading sessions. The site states it is free and requires no registration; no pricing or sign-in appears anywhere on the page.