Have a preset time to enable disable
Others have stated they forget to disable it in the morning. I forget to turn it on when I am in bed.
Pillow’s sleep analysis algorithm relies in part on motion data acquired by the Apple Watch. The only way to retrieve those data is to explicitly start/stop a session. Also, the microphone, speaker and haptic feedback on the Apple Watch cannot be used by third-party apps that run in the background, like Pillow due to watchOS limitations so we must use iPhone’s. All the above reasons force us to require that Pillow is open on the iPhone and then press Start on Pillow on the Apple Watch. Hopefully, those restrictions will be lifted in future updates of watchOS, and then we will be more than happy to simplify.
That said, we are also working on a completely automatic mode but we have to make sure it doesn’t sacrifice any of the reliability and accuracy of the sleep analysis.