The user interface is not intuitive. Therefore, it’s not clear how to use the app. In turn, the app doesn’t work well. Of all the blood pressure readings I took, none of them were even close to the real numbers. The readings I got were something like 80/65 consistently. in short, it doesn’t work. I guess a lot more development needs to go in to make it even a remotely usable app. i’m gonna remove it from my phone.