Online measurement · no app install
Check your heart rate online
Place your phone on your chest. Its motion sensors estimate your heart rate.
- Free online tool
- No registration
- No camera
Online pulse check
To measure online, use a phone with motion sensors. Rest quietly, follow the placement instructions and keep still during the measurement.
Interactive measurement tool available on mobile devices with motion sensors.
An estimated heart rate is not a medical diagnosis. Disclaimer
How It Works
Unlike other apps that use your camera, HeartScan uses your phone's accelerometer to detect tiny vibrations from your heartbeat - a technology called seismocardiography (SCG). No camera or flash required.
Lay Down
Position yourself comfortably in a reclined position.
Press Start
Press start and place your smartphone on your chest.
Complete the Scan
Remain still until you hear the finishing signal.
SCG records mechanical heart activity
Your phone’s accelerometer detects tiny chest vibrations associated with the mechanical activity of the heart. This is seismocardiography, or SCG.
SCG is not an electrical ECG recording. A browser heart rate estimate cannot diagnose heart disease or replace clinical assessment. Research findings depend on the equipment and study protocol.
Schematic: motion is exaggerated for visibility. Anatomy, size, and displacement are not to scale.
Mechanical vibrations associated with heartbeats
Current stepMotion detected by the phone resting on the chest
Estimate beat timing within the motion signal
Estimate heart rate from intervals between beats
SCG (seismocardiography) uses the phone’s motion sensors, not its camera or a finger/wrist measurement. It detects mechanical vibrations, not the heart’s electrical activity. This is not a measurement or an arrhythmia diagnosis.
Put your heart rate reading in context
A single number is only a snapshot. Consistent conditions, symptoms and changes over time help you decide what to do next.
Learn your usual resting rate
Compare readings taken at a similar time and in the same position, rather than treating one reading as a diagnosis.
Use repeatable conditions
Rest first and follow the phone-placement instructions. Movement and device position can affect the result.
Add context, not a fitness verdict
Activity, stress, sleep and medicines can affect heart rate. A low number alone does not prove fitness or health.
Know when to seek advice
Discuss persistent unexplained changes with a clinician. Severe symptoms require urgent help, whatever number is shown.
Illustrated heart rate guide
Understand what your resting heart rate is telling you
Explore how your heart works, why your pulse changes, and when to seek medical advice, with step-by-step animations.
Professional resources
Explore SCG interpretation and the research behind the technology.
Clinical SCG guide
Recording basics, waveform patterns, interpretation pitfalls, and when to escalate care.
Read the clinical guideOpenSCG research
Explore the SCG research landscape through OpenSCG, an external research resource.
Explore OpenSCG (External resource)Feedback about the HeartScan app
Selected comments about the native app. User feedback is not clinical evidence of the browser tool’s accuracy.
HeartScan appSandra Anneman, DNP
Cardiac Nurse
"Love it. I am a Cardiac nurse but I use the app as a guide only and it matches what I feel."
Pamala Pudentai
Verified User
"It's the one App that can quickly detect AFIB and other heart abnormality... You place your cell on your chest, very accurate and easily printed out!"
Lanette
Verified User
"This app is accurate to measurements of heart rate and arrhythmias I've been feeling for years... The app has shareable data which can be shared with cardiologists either electronically or by printing."
Download HeartScan Today
Monitor your heart rate anytime, anywhere. No wearables needed.
Free to download. Premium features available via subscription.