World Clock
Add and remove cities such as New York, London, Mumbai, Tokyo, and Sydney. Each card shows the local time, date, and time-zone abbreviation using your system clock.
Clock: Time Zones & Alarms + Stopwatch & Timer
Clock puts four time tools in one small popup. The stopwatch is free. World Clock, Alarms, and Timer are premium. Your clocks and timers stay on this device.
What Clock includes
Alarms
Set a time and an optional name, then turn the alarm on or off. When it rings, the web page blurs and shows the name, time, Snooze, and Stop. Snooze waits 5 minutes.
Stopwatch
Start, pause, resume, reset, and record laps with centiseconds. Elapsed time stays correct if you close the popup and open it again.
Timer
Enter hours, minutes, and seconds, then start, pause, resume, or reset. At zero, the page shows 00:00 in red, Close, and “Time's up!” for 4 seconds.
Who Clock is for
Clock is for anyone who checks another city’s time, needs a quick countdown, or times a task without leaving the browser. It is built for Chrome and other Chromium browsers such as Edge, version 116 or newer.
Free and premium tools
The stopwatch is free as soon as you open Clock. World Clock, Alarms, and Timer are premium. You can buy premium on a secure checkout page. Clock does not store your card number. After payment, those three tools unlock in the extension. The stopwatch stays free either way.
How premium purchase works
- Choose Upgrade inside Clock when you open World Clock, Alarms, or Timer.
- Complete payment on the secure checkout page.
- Return to Clock. Premium tools stay available on that browser.
Questions about Clock
What is the Clock browser extension?
Clock is a browser popup with a world clock, alarms, a stopwatch, and a countdown timer.
Which features are free?
The stopwatch is free. World Clock, Alarms, and Timer unlock after you buy premium.
How do I unlock premium features?
Use Upgrade in Clock, then pay on the secure checkout page. Clock does not keep your card number. World Clock, Alarms, and Timer unlock after payment.
Does Clock upload my alarms or time zones?
No. Those details stay in the browser’s extension storage on your computer. Read the privacy policy for the full list.
What does an alarm look like when it rings?
The current web page blurs. A card shows the alarm name, the time, Snooze, and Stop. Snooze rings again in 5 minutes. Stop ends this ring and keeps the alarm for the next day.
What does the timer show at zero?
The page blurs and shows 00:00 in red, a Close button, and “Time's up!” with a red clock icon. The screen closes after 4 seconds, or sooner if you press Close.