Bests & Worsts Reviews from Amazon

Used the device exactly as instructed, but the regularity with which the EKG was completely corrupted by signal interference was unacceptable. In general, it would take 3-4 tries just to get an EKG reading that the app would even accept, as it normally cut the reading short saying there was too much signal interference. I regularly achieved Afib and "Unclassified" EKG readings, which worried me enough to spend the $19 necessary to get a full analysis from a cardiologist. After spending nearly $100, every single one of the readings came back as "NORMAL SINUS RHYTHM", even though the app itself would analyze them as otherwise. Finally, I was able to get a 12-lead ECG in my doctor's office while simultaneously using this device in order to test accuracy. The 12-lead ECG showed perfectly normal heart rhythm, while this device showed massive irregularities. Not sure if I just got a defective unit, but, either way, I am returning the product.