Cardiographer

Cardiographer turns your iPhone's rear camera into a fingertip pulse reader. Cover the camera with a fingertip and watch your full pulse waveform at 240 samples per second — heart rate, the pulse shape with its dicrotic notch, and heart-rate variability for stress & recovery awareness. Everything is processed on your device; nothing is uploaded.

SEE EVERY BEAT
• Live pulse waveform at 240 Hz with beat-by-beat detail
• One averaged beat with the dicrotic notch labeled
• Heart rate (BPM) with signal-quality feedback

STRESS & RECOVERY, YOUR WAY
• HRV (SDNN) after every reading
• Trends over time in History
• Export readings as CSV

PRIVATE BY DESIGN
• 100% on-device processing — no account, no cloud, no tracking

A FINGERTIP AND SOME LIGHT
• Cleanest signal in daylight — just face the incoming light
• Dark room? Turn on the flash with one tap, or use any lamp
• Clear guidance for a good signal

CARDIOGRAPHER PRO
Unlimited readings, full history and CSV export with a monthly subscription — 7-day free trial for new subscribers. Payment is charged to your Apple ID account; the subscription auto-renews unless cancelled at least 24 hours before the current period ends. Manage or cancel anytime in Settings.

Cardiographer is for general wellness and fitness only. It is not a medical device and is not intended to diagnose, treat, or monitor any medical condition.

Terms of Use (Apple standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy policy: https://software.nanorescenter.com/cardiographer-privacy