HEART RATE MONITOR:
• Simply cover the back of the camera with your fingers to count your heart rate in a few seconds once a day
Regarding In-App Purchase:
With a Premium account you get access to
• TRACK your RESULTS over time:
* Personal dashboard with history (daily, weekly , and monthly) and Charts
• Unlimited access to measurements
• Detailed statistics are always at hand
• Up to 3 users in one app