Spotify actively monitors for unusual API calls and "illegal" app usage. Using a modded version can lead to a permanent ban of your Spotify account and the loss of all your saved playlists.
While the lure of free Premium features is strong, the and the risk of an account ban outweigh the benefits. Additionally, being an older version, the performance is likely to be buggy on modern devices.
Allows you to play any song directly rather than being forced into "Shuffle Only" mode.
"I tried a modded Spotify once, and while it worked for a week, my account was eventually flagged and I lost five years' worth of playlists. It’s not worth the hassle."
Lifts the "6 skips per hour" restriction found on the free tier.