I don't know if it's just me but putting search terms in yielded few results, legitimate or otherwise. Most results for example when searching video files just linked to YouTube which were freely available to search anyway. I uninstalled it after a few searches. I've voted hot as it's free. I hope others have moreluck!
Not free. £8.49
You can deny all permissions and then it will use your own downloader.
Who's to say that this app isn't reading private content off your phone's storage and sdcard, and sharing it to any users searching? It certainly requests enough permissions to enable that. If you must find a file of dubious origin, I'd recommend that you use their website instead. That way, at least the browser will ensure your local files can't be accessed.
Aah yes good old days