The EKGraph is very well worth its price. I suspected I had it a serious arrhythmia problem and asked my HMO PCP for an appointment and EKG test. I was told I have to wait till June 2020 because of our state’s Covid-19 shut down. I ordered and received in 2 days from SonoHealth the EKGraph. I then sent to my doctor several test strips from my new EKGraph and got a next day appointment. After doing his own EKG my doctor was very concerned and sent me immediately to a cardiologist where I learned I do indeed have several very serious heart problems, the most life threating being Tachacardia and Atrial Fibulation. A proscription brought my high heart rate down. I still have issues but they are at least manageable. The EKGraph in all likeliness saved my life during difficult times. I never knew that home use devices were available until I saw a competitor’s ad on TV. But the competitor’s product involved subscription fees so a google search brought me to the EKGraph.