Great leverage!

The problem is fixed! Thank you.
Now old news --> The newest app does not work for me. I see a graph showing my heartbeat but no sound. HB remains at zero and I get instructions on how to hold my phone. App was a solid performer for me. Not now at all. Hope it works better for others. iPhone 5s, iOS 9.2.1

cupneverempty about Runtastic Heart Rate PRO, v2.0.2