Third-party sleep tracking apps are far better than the built-in sleep tracking apps for the Apple watch, because it is elementary and has fewer features than third-party applications. The excellence of the Apple Watch is that there’s a rich ecosystem of outsider applications, which grow the list of capabilities past the standard watchOS experience. So even though Apple hasn’t locally added sleep tracking, there’s no deficiency of applications to make up for the shortcoming.
Read More — Best Sleep Tracking Apps for Apple Watch, Free and Paid Apps