Sometimes it works well, unfortunately not always.
Lots of times not, Artist are not found therefore you can't create a playlist of any artist you want. These "not found" Artist are in Spotify and even in your library. Strange thing the app can't found them. Other artists found, but not added to the playlists. Other times playlists are not saving to Spotify ore app crashing constantly. Length of playlist not working always, you choose 100 but get 48 numbers. In short, the app hase potential, but is not working well at this moment.