Quadio app won’t work in new phones

Well even the reference to quardioarm app is still vague as there is the following in the App Store:

• Qardio heart health app (subscription)
  • Not updated in a year. Requires iOS 12.4 or later (but that does not mean it is compatible yet with iOS 18.5).
  • Works with physical QardioArm Blood pressure cuff (but unclear if it works with the QardioArm 2 cuff).

Contact: Qardio.com

Safari won't connect to their support website, but the above link gives you contact options. Their website needs some professional attention as several links are broken.

There is currently one iOS app in the App Store with the name Quadio…

If this is the Quadio Devices Private Limited's Q+ Hearing Aid app, it shows it hasn't been updated in 3 years and purportedly requires iOS 11 or later. Three years is a long time lapse in App Development for iOS and the developer appears to be out to lunch… so to speak. For this particular application the developer website is in India (e.g. quadio.in).

See this additional information about Qardio potentially bankrupt…

Qardio link not working - Apple Community