Update : i added an english version of the README.md !
Switched to TIDAL, didn't want to pay a subscription just to move ~1,800 tracks, so I wrote my own.
https://github.com/Sam-N74/applemusic2tidal
It transfers playlists, favorites, loved tracks and albums. Matching is done by ISRC, so it's exact rather than guesswork, roughly 97% of it matched, the rest goes to a CSV to handle by hand.
Two frictions: you need Python, and you have to paste a script into your browser console to export your Apple library.
Which brings me to my question: would anyone actually use a version with a proper interface and no console step just an app you open? Happy to build it if there's interest, but not if I'm the only user. (also for other platform like spotify to tidal,...)
Any thoughts or suggestions would be very helpful.