Use The Fitbit App With Your iPhone Instead Of A Fitbit - krypted
Fitbit notifications glitch on iOS 13 officially acknowledged, still no sign of a proper fix - PiunikaWeb
Fitbit Supported Devices
Fitbit | Ios app iphone, Ios app icon, App logo
Fitbit Versa 2 Health and Fitness Smartwatch with Heart Rate, Music, Alexa Built-In, Sleep and Swim Tracking, Petal/Copper Rose, One Size (S and L Bands Included) : Electronics