Calmer than a five-minute nudge, a quarter-hour beat suits a stretch and screen break, a hydration prompt, or a check-in to see whether a task is still on track. It marks each fifteen minutes out loud so the workday or lesson keeps its shape without anyone minding the clock.
It is frequent enough to matter and spaced enough to stay out of the way, which makes it a comfortable all-morning or all-afternoon setting. Eight reminders cover two hours as set; raise the rounds to span a longer stretch.
A frequent five-minute nudge to look up, stretch, or check progress — a beep every 5 minutes, on repeat, for a desk or a classroom. Runs in your browser, no install.
The half-hour is the interval ergonomics advice points to for breaking up sitting — a beep every 30 minutes, on repeat, to stand, stretch, or rest your eyes. No account, no install.