Coherence by Presage Tech

Coherence by Presage uses your phone's camera to measure vital signs like heart rate, breathing rate, and HRV — no wearables needed. Just point the camera at your face for 30 seconds and get real-time biometric insights powered by AI.

How it works
Our clinically-validated computer vision technology detects tiny color changes in your skin invisible to the naked eye, extracting pulse and respiratory signals in real time.

What you can measure
• Heart rate (BPM)
• Breathing rate
• Heart rate variability (HRV)
• Stress levels
• Relaxation and coherence scores

Key features
• No wearables or extra hardware required
• AI-powered wellness insights after each scan
• Guided activities: Stress Check, HRV Analysis, Wellness Summary, and more
• Track trends over time
• Privacy-first — your data stays yours

Coherence is not a medical device and is intended for wellness purposes only. Estimates are

not for medical use.