Backup specific app?

Is there possible to backup one specific app not total phone
Like androi
I want to backup bar file not apk

BHiNDER

No it's not currently possible.

Maybe could you be specific about exactly what you want to do and why? There might be a solution if you could provide more information.

My one paid app is not working
I want to dleate it and then restore
I did not want to pay again

BHiNDER