QuietChime: a calm hourly chime (and interval timer)

Get a gentle sound every hour—or every 15/30/60 minutes—for timeboxing, Pomodoro, and day planning. Runs in your browser or as an installable PWA, works offline, and stores settings on your device.

FAQ
What can I use this for?
Use it for day planning, Pomodoro timers, or timebox productivity with hourly chimes or shorter reminders. Run it in your browser throughout the day (or install it as a PWA) and use 60-minute intervals to chime on the hour; 30m or 15m intervals work too.
How does Do Not Disturb work?
Use this to exclude your non-working hours so you can keep the browser open all the time. Set start and end times to mute chimes during that window, including overnight ranges.
Does it work offline?
Yes. QuietChime is an installable Progressive Web App (PWA) and stores settings locally. No accounts, no tracking, and no data storage on our servers.
What does it cost?
The app is free to use. If you find it useful, consider donating using Bitcoin Lightning to support hosting costs.