Pick a tea, hit start, and pour when it chimes. Each steep automatically asks for a few more seconds than the last — the way gongfu brewing actually works — so you can keep your hands on the teaware instead of the clock.
It runs entirely in your browser: nothing to install, no account, and the steep times come from this site's own brewing data, not a paid lookup.
New to short-steep brewing? Start with the shu puerh tablet guide.