Master Watch Face is a personalization app for Android devices that allows you to customize your watch face. This app is designed for Wear OS watches, but you can still use it as a clock widget on your mobile device. It comes with a range of features, including the ability to choose design colors, define a secondary timezone for digital display, view the day and month, monitor your watch and mobile battery, check the weather, track your daily step count, and view unread emails and SMS. It also offers presets and complication (wear 2.0), and the free settings include options to choose design colors, define heartbeat frequency refresh rate, and define weather refresh rate, among others. The premium settings offer even more customization options, such as the ability to choose your own title in place of "X-GEN," switch between eco/simple b&w/full ambient mode, and choose your own background among different styles.