HeartBeat Visualisation vs Cardiographer

HeartBeat visualises the heart beat recorded by one of the many available BlueTooth Low Energy (BLE) heart beat sensors available. This application aims to give the user a clear readout of such a sensor. This software is build in such a way that is should work with any bluetooth low energy heart beat sensor available. During measurements, some statistical information about beat to beat interval timing is shown as an indication of the heart rate variability (HRV) The accuracy of the information depends heavily on the sensor used! Next to the statistical standard deviation between beats (SDNN), the number of succeeding beat cycles in a 20ms (NN20) and 50ms (NN50) interval is calculated together with the percentage of those cycles. (pNN20/pNN50) There are two charts, one of the last 5 minutes and one overall chart with aggregated data. The App has a function to upload the raw sensor data to a TCP/IP socket for off loading and processing. for more information about the statistical methods use, please see http://en.wikipedia.com/wiki/Heart_rate_variability

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