Use during an intentional nap or at sleep onset. The N1 window right as you drift off is where themes take hold best.
Cover the rear camera (and flash) fully with a fingertip. Hold still 45 seconds while we read your resting pulse and HRV.
Pair any Bluetooth heart-rate strap or band (standard HR service). Cues will wait for your real sleep onset and back off if they disturb you. Android Chrome / desktop only — iOS Safari has no Web Bluetooth.
Runs locally in your browser. Voice cues use on-device speech — no audio leaves the phone. Reports save to your own server.
Cues fall back to the browser voice automatically if a provider fails mid-session. Rate/pitch shaping applies to the browser voice only. Amazon Polly support lands with the billing build (needs a small server proxy for request signing).