Ive got a friend who uses an app called apps2 fire. He downloaded it onto his android phone and then he can transfer apps from his phone to his firestick. He tells me that kodi and show box are the best but there is another that turns the remote into a mouse. Cant remember what its called bit he said its easy to find on google.
My friend is lucky he has a good internet supply so buffering is rare.
He uses iplayer a lot and for that you do need a vpn. As with the ITV and channel 4 and 5 catchups.
Now if only i could remember my friends name.😀😀