iOS 12 replacement for default Music-app which can "remember playback position" I upgrade from iPhone 4GS 16GB iOS 7.0.6 to iPhone 8 Plus 256GB iOS 12 
so i can put all my audiobooks on my phone.

but in new Music app remember playback position does not work anymore.
In iTunes it show remember playback position set on set on iphone music files.

So i need a replacement can do it.

I got over 680+ Audiobooks in my iTunes Library set as music type.
Why music type vs audiobooks are more tags show by default.
got 600+ 
Tags with 
SongTrackName+ArtistAuthor+AlbumTitle+ComposerReader+Genre+Year+Comments+ArtworkBookcover

I try audiobooks apps all i come over was lacking in display all info i want+easy search through i got over 600 audiobooks i does not want to move through all with scrolling max 5 books per scroll in scrolling no info. 

I got over 70+ Smart Playlist on iTunes i like to use then fine right audiobook for time and day i want to hear audiobooks.

https://itunes.apple.com/us/app/ecoute/id536882653 half like the interface but does not support remember playback position
fine out after pay away ads does not support .m4a half iTunes Library are in this format thought it was a bug in app but after read app info... :( but fine other bug if to many files on app it crashes on startup!!

FLAC Player+

Good Old Music Interface:
Song,Playlists,Artist,Album,Composer,Genre

Got a Setting Start Playing turn from From Beginning to Where Left Off
that works! :)

No support for default iTunes Library sync.

Now copy all file through https or iCloud-Drive but vs start think switch to other different Phone it much easier.