User manual: FibriCheck Portal 15 January 2025 14:18 Updated Note: This article does not apply if you reside in the US. For information and assistance regarding the US version of the FibriCheck app, please visit this link. This page has the latest version of the user instructions at all times. Related articles User manual: FibriCheck app What do the different heart rhythm measurement results mean? My smartphone has more than one camera lens. Which should I use to take measurements? Can you monitor more than just your heart rhythm with FibriCheck? Which measurements are reviewed if I have Premium subscription plan?