Sleep Tracker & Pulse Point funktioniert nicht

Subscribe to take advantage of all premium features. · Your subscription will automatically renew to a paid subscription unless auto-renew is turned off. · Please note: any unused portion of a free trial period (if offered) will be forfeited when you purchase a premium subscription during the free trial period. · You can cancel a free trial or subscription anytime by turning off auto-renewal through your iTunes account settings.  This must be done 24 hours before the end of a free trial or subscription period to avoid being charged.  Intelligent detection-By using mobile phone camera and flash, it only needs one finger to quickly detect your current heart rate value, which is convenient, simple and fast.  If you awake during the night due to coughing, sneezing, or other ailments, you may never reach a deep sleep and remain drowsy throughout the day.  The average adult needs between 7 and 8 hours of uninterrupted sleep to reach regenerative REM cycles.  Smart alarm finds the optimal time to wake you up so that you will feel more energetic and rested!  The App automatically monitors the sleep cycle to improve your sleep quality.  Just hold your iPhone and simply cover the back camera with your finger to read your pulse.  Real-time heartbeat curve - real-time view the amplitude of heartbeat and understand the activity of heartbeat.  The app generates daily sleep insights and graphs.  You can accomplish this and more with your Sleep Tracker!  MEASURE YOUR HEART RATE DAILY TO BE A BETTER, HEALTHIER YOU!  Never miss a beat with our app and your iPhone. No other devices needed!  Are you going to bed early but still don’t feel fully rested in the morning?  Get your heart rate in less than 10 seconds.  You may be having trouble sleeping through the entire night.