シンプルタイマー is a straightforward timer extension designed for the Chrome browser, providing users with essential countdown functionality. It allows users to set timers for 1, 5, or 10 minutes, or specify any number of seconds by entering the desired amount. The user interface is intuitive, featuring a play button to start the countdown and a pause button to temporarily halt the timer.

Once initiated, the countdown continues to run in the background, ensuring that users can stay focused on their tasks without interruptions. The remaining time is conveniently displayed under the extension icon, allowing for quick reference. This free add-on is ideal for those seeking a simple and effective tool for time management.