Suggestions: It’s great that your product is so easy to use. But is it capable of providing more information? Have an Advanced Instruction Set where you explain QRS in detail but in layman’s terms and give alternative lead locations. The app could have menu selections to label the graph, hand to hand (default), leg, chest, etc. This graph label would be different than a section for notes. Another user mentioned his use of electrode gel eliminated artifacts and increased amplitude. If that is true perhaps you could offer the product on your website. Can this proposed Advanced Instruction set be made available without running afoul of making claims beyond the capabilities of the device? I realize the device cannot duplicate EKG machines that cost thousands. I think your device provides great value.