Coala provides patch-free, professional grade heart monitoring by prescription. Powered by dual-lead technology and an integrated smart algorithm, Coala leverages both chest and thumb ECG tracings to evaluate heart rhythms via cloud based smart algorithms. The Coala also provides high fidelity heart sound recording by stethoscope, decision software support system (Arrythmia and PCG), monitoring service with certified monitoring technician, alerts to severe cardiac events and comprehensive reports summarizing results. Data is maintained by secure SSL and on a HIPPA compliant server. The datacenters are encrypted.