Welcome to the Fitbit Community, @Cocolivie. I am sorry for the delayed response.
I appreciate your participation in the Forums and sharing your concern about connecting your Charge 4 to the Nike running club app. While it's not possible at the moment, I recommend voting for this suggestion in our Feature Suggestions board. It is listed as Not Currently Planned, but you can still support the idea by voting for it. Be sure to read the FAQ to better understand how that board works.
Thank you for your feedback and suggestion, our team is always working on improving our devices and user experiences, and your comments are always welcome. For information about connecting Fitbit with another apps, see How do I connect my Fitbit account with another app? and How do I install and manage apps on my Fitbit device?
If you have any questions, feel free to let me know.
Want to discuss ways to increase your activity? Visit Get Moving in the Lifestyle Discussion Forum.
