Live countdown timer
An event timer that updates every second, in the event's own timezone, so the number is always right.
Chrono Countdown turns birthdays, trips, anniversaries, launches, school dates, and personal milestones into a clear timeline you can check at a glance. It is a countdown timer app for iOS, Android, and the web, built for anticipation without the clutter of a traditional calendar.
No download, no account needed to start.


Pick a date and name the moment, a birthday, trip, launch, or deadline. No account needed to start.
Add a cover image, category, and notes. Mark it recurring if it returns every year, and set a reminder so it doesn't sneak up on you.
Keep it private, invite people by username, or make it public. Sign in to sync across web, iOS, and Android.
A birthday countdown, a recurring holiday timer, or a shareable countdown for the whole group, Chrono adapts to the moment.
An event timer that updates every second, in the event's own timezone, so the number is always right.
Birthday countdowns, anniversaries, and holidays roll forward to their next occurrence automatically, every year.
Make a countdown public and share the link, or invite specific people by username to a private one.
Start in the browser with no account, then sync when you're ready.
Get a push or email nudge before the date arrives.
Public countdowns the Chrono community is tracking.
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HolidayYes. Chrono is free to use on the web, iOS, and Android, with no limit on how many countdowns you can create.
Countdowns you create in the web app work locally without an account, so the timer keeps running without a connection. Syncing across devices requires signing in.
Yes. Sign in and your countdowns sync across the web app, iOS, and Android.
Yes. New countdowns are private until you choose to share them with specific people or make them public.
Yes. Invite people by username to a private countdown, or make it public so anyone with the link can view and track it.
Yes. Add push or email reminders at a set time before any countdown's date.
Yes. Mark a countdown as recurring and Chrono automatically rolls it forward to its next occurrence once the date passes.
Yes. Public countdowns can be embedded as a small, live widget on any website.
Use Chrono on the web, iPhone, or Android and keep the dates that matter within reach.