Type what you are working on, set the length and start. When the time is up you get a sound and one question: did you finish or not. No account, nothing sent to our server — the last three sessions stay in your browser.
No. The timer works straight away and the last three sessions stay in your browser. An account is only useful once you want the full history and to log time against projects.
No. This page sends no sessions to a server. Everything you type stays in your browser and disappears when you clear its data.
Yes. Time is read from the system clock rather than counted in ticks, so a sleeping tab loses no minutes. Progress shows in the tab title.
Classically 25 minutes of work and a 5 minute break, with a longer break every fourth. Here you can set anything from 15 to 90 minutes — the method is a guide, not a rulebook.
Yes, unless you mute it with the button or your browser is muted. The sound is enabled when you press start, because phones will not play audio without a tap from you.