Hello @SilversaxMan, good to see you have joined the Fitbit Community! Qardio app is not listed among our officially supported third party integrations.
However there are tons of apps that use our Open API to integrate their service with ours. The best way to tell if an app is compatible with Fitbit is to go to the third party site (or app) and poke around their settings to see if you can connect Fitbit. You can also browse their site for information or contact the app owner and ask if they integrate with Fitbit.
If the app is not supported, u can also visit our Feature Suggestion board to share your feedback.
Just a heads up, since this is a third party app topic, I have relocated your post to our Third Party Integration board.
See you later and let me know if you have other questions.
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