4 stars: This is an almost perfect tool. I built myself an incredibly complicated set of library playlists that merge into a web of different genre and time period playlists and spent hours setting it all up in the app so it can maintain them as I add songs. But today I realized that it ignores songs that you add from your own library. If the songs ever existed in the Spotify catalog, they will merge. But if you add something Spotify never cataloged, it vanishes from the merged playlists. That means that it's impossible to include , for example, The KLF. This eliminates something like 1000 songs from my library. So, I'm going to have to ditch this app and go back to maintaining things manually. However, if you don't have a lot of local files to include, this app is fantastic.
5 stars: Exactly the kind of thing I was looking for. Spotify's biggest weakness is that it can't alternate between multiple playlists, but this is a great workaround. Works fast too. Would love to have the option to get a different ordering each time I run the rule.
5 stars: I just downloaded it on my Samsung S8. And when I try to open it it closes right away. Can't get it to work. (Update as of 6/15/17) Hey Sandro. So, I got it to work after I restarted my phone. But then I had problems when I tried to merge too many playlists at once. But... The new version is much, much better. It still hangs sometimes when I try to merge more than about 5 or 6 playlist into my big playlist of about 1,...