Apple's built-in Sleep app is free and tracks sleep duration, but there are other paid apps that have even more sleep tracking features.

Apple just rolled out a helpful new health metric for Apple Watch users. Your daily sleep score, on a scale from one to 100, is based on factors like bedtime consistency, time spent in various sleep ...

Did you know you can customize Google to filter out garbage? Take these steps for better search results, including adding my work at Lifehacker as a preferred source. The latest Apple Watches now ...

According to Apple's presentation, the smartwatch will look for chronic hypertension over 30-day periods. Apple's ...