Last Seen Watcher is a free Chrome add-on designed to monitor the 'last seen' status on various messaging platforms. It checks the status every 10 seconds, ensuring users are promptly alerted when a change occurs. The add-on features a 20-second alarm that plays whenever the monitored status updates, providing a straightforward way to keep track of online activity without constant manual checking.

This tool is particularly useful for users who want to stay informed about the availability of their contacts. Its simple functionality allows for easy integration into the browsing experience, making it a convenient addition for those who rely on messaging apps. With its minimalistic approach, Last Seen Watcher serves its purpose efficiently, offering a practical solution for status monitoring.