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Free guide · iPhone camera Research shows smartphone PPG is within 2–3 bpm of clinical-grade monitors at rest. Here's what affects your reading quality and how to get consistent results.
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91 BPM
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Learn & Track — All in One Free App
Pulse Rate turns complex biometric concepts into simple daily habits. Measure, track, and understand your body using just your iPhone.
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Syncs with Apple Health. Instantly.
Import your workouts from Apple Health to combine activity history with camera-based readings. Every measurement syncs back to your health dashboard automatically.
How it works
Camera-based HR works best at rest. Sit quietly and press your fingertip firmly (but not too hard) against the rear camera. Motion artifacts are the #1 source of error.
Pulse Rate activates the camera flash to illuminate your fingertip capillaries. Avoid direct sunlight on the lens, which can saturate the sensor and introduce noise.
Cold fingers constrict capillaries and reduce PPG signal quality. Warm your hands for 1–2 minutes before measuring if you've been outside in cold weather.
The real power of camera HR is trend tracking. A single reading carries some margin of error; 30 daily readings reveal patterns that are meaningful for wellness logging.
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Your iPhone camera is all you need. No wearable, no subscription, no credit card. Just download and take your first reading in 60 seconds.
Download Free AppFor fitness and wellness purposes only. Not intended for medical diagnosis or treatment.