There is no FM receiver chip in the iPad, so no app would exist to do it.
Many FM stations do stream over the Internet, so there are plenty of apps designed to stream those.
Is there one you recommend over another ?
Thank you
I, personally, use the app TuneIn Radio. You can get a free version or pay $4.99 (USD) for the Pro version. If a station in the world is broadcasting (via the Internet), the chances are that TuneIn Radio will pick them up.
Good luck on your search.
Marilyn