PlayingAlbums for iOS

You will listen to an album, then another album, then another......
All your songs or songs in the selected playlist will be shuffled by album.
If you are a user of PlayingAlbums for macOS, you will share its settings for PlayingAlbums for iPhone. You may not want to listen to songs serially of an album with multiple discs. Disc 2 is sometimes completely different from disc 1.
Playlists shuffled by albums can be shared with your other devices via iCloud