Bodymatter, based in Newport Beach, built SleepWatch around a simple habit: wear the Watch, forget about it, read the summary at breakfast. The app scores each night, follows how consistent the sleep rhythm is, and pays unusual attention to the resting heart rate dip, a metric most rivals bury three screens deep. Nights without the Watch can be entered by hand. The App Store average sits near 4.7 across more than 300,000 ratings.
The free tier covers the basics, while premium adds trends, deeper analytics and full history. A sensible pick for readers who want the app to interpret the night in plain sentences instead of handing over raw graphs. Those who dislike recurring payments for their own data will find the paywall irritating, and there is no Android version.
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