Loved the Qardio cuff and the app. But then iOS 9 broke the app and it started crashing at launch. After reaching out to Qardio Support, they assured me that my data was safely in my online account and that I could delete the app and reinstall. Deleting the app and reinstalling it solved my issues. And on first launch, all my historical data was synchronized and appeared in the app as before. Whew! The app and my cuff are once again working as before. It really is a slick little app and makes viewing my historical data easy and clear (much more so than the Health app). Qardio Support was prompt and helpful. Im a fan.
MH.NYC about Qardio heart health