Fitness+ with Amazon Firestick

Dear Community,

I recently bought Apple Watch with which I got 3 months free subscription of Fitness +. Since I don’t have Apple TV or any other end device that supports AirPlay , I am limited to use the Fitness + in my iPhone and it is not practical due to small display. I have a TV that is connected with Amazon Firestick. Is there any reliable App that helps me cast Fitness + videos on TV screen? Thanks for your support.

Best regards,

Raj