Note that apps built from the SDK don't have access to the full history, only up to some cutoff. I tried a couple over the years and wrongly concluded Spotify deleted your history after some time.

The data download does contain everything, which was a very pleasant surprise. I didn't think I'd ever see the data from the couple years gap in my last.fm.

There's probably one person nursing some horrific bogslop software that frequently breaks but absolutely cannot be rewritten or changed (because it was someone's pet project) and frequently has to be manually twizzled to get things out of what is probably a hostile data retrieval environment and they're just TIRED and that's why there's a 30 day leeway because otherwise the Data Retrieval Goblin would be way over the line of overwhelmed rather than just under it all the time.

Probably.

(I realise I've likely described a significant percentage of companies there.)

My usage went way up once I was able to properly scrobble listens played via my hifi.

In my defence, it was only recently that you could sensibly scrobble from iOS with Marvis and I gave up on Spotify countless years ago.

I initially moved to it because Shortcuts broke my "generate 2h of music I rarely listen to" shortcut (it stopped being able to add music to playlists - hilarious for an in-house app talking to an in-house app!) and someone suggested Marvis because it has a "dynamic smart playlist" and it also has integrated scrobbling.

You can pretty much replace the Apple Music frontend with Marvis (at least on iOS) and everything works the same (because it's still using Music as its backend.)

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