When it comes to Spotify free and premium account, I think it's not different between them for me.
Since I have received an excellent Spotify Converter that can not only download Spotify music and playlists offline but also convert Spotify song tracks to MP3, FLAC, WAV so that I can listen to Spotify songs offline on any device without restrictrion.
More important, it has the abiligy of blocking ads on Spotify so you can listen to ad-free Spotify music as I like.
This is the way I used to get the Spotify Premium for free forever. What about yours?