ポモドーロタイマー (Pomodoro Timer) is a chrome extension that allows users to utilize the Pomodoro Technique. With this timer, you can set the working time to 25 minutes and the rest time to 5 minutes. Once the timer starts, a confirmation screen will appear when the working time is over, prompting you to take a break. By clicking "OK," the break timer will begin. After the break time is over, another confirmation screen will appear to start the work time again. By clicking "OK," the work time timer will start. This cycle can be repeated until you choose to end it by pressing "stop" on the popup screen or "Cancel" on the confirmation screen.