This is a very unique item, purchased as I thought I would be able to use the murmur algorithm but that is only available as an enterprise option. They do not offer individual ones. I do love how well it amplifies the heart and lung sounds and feel that it has been of benefit to me. It takes a bit of practice to know how to switch between diaphragm, bell and dual-use. I have had some trouble with the device disconnecting from the app even when it is right next to it. I suppose with time and practice I will have it figured out. Also, the ear tips fall off quite easily. The company did send me replacements, but I feel that this is a shortcoming.