Once you've set it up, you'll need to take your blood pressure thrice in the morning and thrice in the evening for five straight days. You can either use a connected device like Withing's own Wireless Blood Pressure Monitor, or just type in the data manually. Hy-result will then assess your blood pressure data, taking into account the information you've given it. The feature's final report will include your average blood pressure, color-coded to indicate if it falls within normal range or if you're hypertensive. It'll also include preventative measures you can take for any heart health risk and a PDF with the results that you can share with a doctor. You can see some screenshots of the in-app function right here.
Withings says it proved Hy-result's efficacy in a clinical trial that compared its findings with those of hypertension specialists'. According to the study published in Blood Pressure Monitoring Journal, the results generated by the app were the same as the specialists' findings 95.4 percent of the time. The feature's now available for download through the iOS app, but (unfortunately for a lot of people) only if you're in the US, Canada, UK or France.