Solved: Add relax app to Charge 5 - Fitbit Community
Can You Download Apps on Fitbit Charge 5? - Smart Digi Here
Fitbit announces their new Universal Windows App for Windows 10, designed to motivate with enhanced features | Windows Experience Blog
Amazon.com: Fitbit Charge 4 - Rastreador de actividad y fitness con GPS integrado, frecuencia cardíaca, seguimiento del sueño y la natación, negro/negro, talla única (bandas S y L incluidas) : Deportes y