Welcome to the Forums @Marmigal. Thanks for making us aware of the situation and for trying to troubleshoot it.
Take into account that Fitbit devices have an algorithm for step counting. The algorithm is designed to look for intensity and motion patterns that are most indicative of people walking and running. For more details, I recommend you this helpful article How does my Fitbit device count steps? and this post.
It's possible to get different readings if the trackers are worn in different locations (dominant vs non-dominant wrist). We recommend reviewing the accuracy information provided on our help site at How accurate are Fitbit devices?
In addition, I'd like to suggest you to restart your Inspire HR.
Have a nice weekend!
GraceG | French and English Community Moderator, Fitbit
On ne voit bien qu’avec le cœur. L’essentiel est invisible pour les yeux. ♥
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