Pulse Rate. Heartbeat Monitor funktioniert nicht

Pulse Monitor detects a color change in your finger tip each time your heart beats and uses an advanced algorithm to show you your heart rate.  Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal.  Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period.  Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase.  No cancellation of the current subscription is allowed during active subscription period.  Just open the app, you can measure your heart rate anytime, anywhere, show your best condition.  App logger is a smart way to manage your heart rate measurements and track your progress.  Permanent preservation: the measurement results for permanent preservation, and provide visual display of exquisite statements.  Payment will be charged to iTunes Account at confirmation of purchase.  Premium is available with a 1 year subscription: $89.  Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication.