Here is another sleep tracker that helps you better understand your sleeping patterns and what affects your sleep quality. The Beddit 3 is a thin, flexible sensor that stays under the sheet on top of the mattress. It works with all beds and tracks your sleep even when two people are in the same bed.
The device has a smart alarm function to wake you up refreshed in the morning. The companion app will be available for iOS 10 and watchOS 3. Ships in October.