HRV: Heart Rate Cardio Monitor

Most intuitive and lightweight app to measure your heart rate with phone camera and flash.
HR tracking has never been so easy - just cover back camera and flashlight with your finger and instantly see your heart beating live.
All the necessary pulse info:
• Current Heart Rate
• HR Waveform Graph
• Estimated Time Passed
• Camera Signal Quality (fully red when finger is placed properly)
• Previous Measurements History
• History Export & Sharing
x No disruptive popups in the middle of HR tracking
x No persistent offers to buy a pro upgrade
x No mandatory registrations
x No subscriptions - only one time premium purchase (optional)
Also features:
• Dark and Light themes
• Indefinite Scanning mode to keep tracking pulse for as long as you need
• Reminders
• Advanced Metrics (RR, SDNN, RMSSD, NN50, PNN50, LF, HF, LF/HF)

Note that pulse rate data and HR waveforms displayed by application are provided only for reference and by no means are intended for medical use. For healthcare purposes please use medical-grade hardware.