I received my Sono on 8/1/20 and started experimenting with it right away. I had a catheter ablation procedure in June and still experiencing multiple episodes of uncomfortable heart palpitations every day. I was uncertain what was going on. When I would visit mr Dr. that would do a quickly EKG and tell me “igloos good “. I knew something is wrong but had trouble describing it. With the Sono I can see it when it is happening. I had an appointment with my cardiologist today and took several printouts to show him. He was very impressed and scanned then into his records. It is very user friendly. Thank you!!