What happened to Qardio and why is their app still on the app store if it is useless?
I can’t use Qardio devices with the app and it will not connect with Qardio servers. Why is this app still in the App Store with no apparent support alternatives?
Re: "What happened to Qardio and why is their app still on the app store if it is useless?"
Commiserations! However, we are all Apple users, like yourself, in the Community
Saying anything much would likely be speculation, or rumour-based
For answers: Your questions would seem to be best directed to Quardio and to Apple:
The matter was discussed in the community during March / April 2025 in the linked thread below
No-one seems to know much more than you do
Are Qardio servers down after bankruptcy? - Apple Community
Generally, keeping the Apple OS version on our computers or devices up to date with the newest compatible version, and keeping third-party (non-Apple) software updated to the newest version, sidesteps issues.
NB: Just found a much longer (4 page) discussion that is still running, and with replies using today's date:
How to fix Qardio Heart Health app connec… - Apple Community