Like other smart devices, the first requirement for these smart watch devices is an operating system. In the case of Android-powered smartwatches, this is nothing but WearOS. Based heavily on their Android smartphone platform, WearOS combines simplicity and attention to detail in a beautiful cohesive package that allows you to enjoy the complexity of a watch with the fluidity of Android.
For the Wear OS smartwatches to work seamlessly, Google has introduced the Wear OS app for both Android and iOS devices. The Wear OS app is mandatory if you have a corresponding smartwatch as it is through this app that you can actually go about the whole setup.
