About Yeolmae Timer

A browser tool by Yeolmae Apps

Yeolmae Timer is a free timer, stopwatch and Pomodoro tool published under the Yeolmae Apps brand. It runs in your browser without an account or a software download. The interface and these guides are available in English, Korean, Japanese and Simplified Chinese.

What the tool does

Set a countdown from one second to 99 hours, 59 minutes and 59 seconds, pause and resume it, or extend it by one minute. The stopwatch measures elapsed time and records laps. Pomodoro offers 25-minute focus, 5-minute short break and 15-minute long break settings; you choose when the next session starts.

Light and dark themes, fullscreen, optional session labels and shareable settings support different working environments. Share links contain duration, mode and, for Pomodoro, phase. They do not contain your private label or synchronize several people’s clocks.

How we check changes

Checks cover the timer’s state transitions and browser behavior: pause and resume, delayed updates, reload recovery, input limits, mode switching and Pomodoro phase restoration. Browser checks also cover the four languages, theme controls, keyboard access and small screens. Passing those checks does not establish that every browser or device will deliver an alarm while asleep.

Remaining time comes from an end time calculated against the device clock. Browser throttling can delay sound; changing the device clock can affect the reading. Test sound and keep the device awake when a reminder matters.

Reporting a problem

Use the contact information published on the contact page to report an error or request a correction. Include the page address, browser and device, what you expected and the steps that produced the problem. A screenshot without personal notes can help. Please do not send passwords or sensitive information.

The tool is published under the Yeolmae Apps brand. Use the contact method listed on this site for questions about the service.