Pretty nice gadget. A little sensitive to "too much pressure", as warned by the User Manual. Upon use of it for 2 times, I have found the following bugs on the app (IOS): (1) Date on the top records (of the ECG recordings) are late by 1 day. e.g. For today's records of Apr 7, it shows Apr 6; while on the ECG record itself, the correct date and time are recorded (per IOS date and time). There must be a reset somewhere? (2) Editing the "notes" on the ECG record is not user friendly (UI correct). After editing, one normally saves the edit, and then exit. The exit icon is a "X", connotating "not accept". (3) In editing "recording method", choosing one of the four choices , saving it, hitting "X" results in no entry in the "recording method. How do you save? (4) In the four choices of "recording method", the terminology "Lead I, Lead II, Lead III, Lead IV" is different from what is written on the User Manual. So which one is correct - per "standard" ECG notation? Please fix these software bugs. Otherwise, I rate the hardware 5 of 5 * (for now).