Why chain timers into a routine
A single timer is great for a single task, but most of what we do is a sequence: three rounds of focus and break, a sear followed by a long simmer, an opening followed by the main content of a talk. Starting each of those stages by hand works, but it also means you're the one who has to notice when a stage ends, remember what comes next, and tap start again — which is exactly the kind of low-value attention-switching a timer is supposed to remove from your day.
Routines fix that by encoding the whole sequence once. Press Start Routine and TimerHub becomes the thing keeping track of what's next, playing a distinct transition chime as each stage hands off to the following one, and a longer completion chime when the whole routine finishes. You stay in the work — the studying, the training, the cooking, the rehearsing — instead of in the timer app.