Fitbit smartwatches are now fit to monitor signs of atrial fibrillation in Europe

Fitbit Versa and Ionic smartwatch owners will now be able to start monitoring serious heart health conditions like atrial fibrillation thanks to the arrival of a new app. FibriCheck, a health screening and monitoring app had until now previously existed as a smartphone application. In its new Fitbit app guise, it'll run on Fitbit's OS…