TestFlight Watcher is an open-source tool designed to help iOS developers and testers monitor TestFlight beta builds for new updates. By automating the process of checking for new available builds, TestFlight Watcher notifies users when a beta version of an app has been updated, ensuring timely access to the latest test releases. This utility can be particularly useful for users participating in multiple beta programs, as it simplifies the management of app updates by providing real-time alerts and streamlining the testing workflow. The project is available on GitHub, allowing users to self-host the tool and customize it according to their needs.