I bought this for my wife as her cardiologist recommended it to her. My wife has heart problems and this helped her and her cardiologist better understand what was happening to her. We also subscribed to the accompanying app. We knew there would be additional charges for the app. My wife's health outweighs the cost of the app, so I won't complain about it. The app costs $100 a year. I'm glad we bought this device.
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