I use Deemix/Deemon to track hundreds of artists and automatically grab new releases in FLAC from Deezer. It’s slightly manual compared to my *arr stack with its Discord bot, but just a quick copy/paste from Discord/etc into a command.
Personally I have a Deezer Hi-Fi sub to get the flac’s, not sure if their API is still wide open for MP3s or not. It used to be open for anything without a paid account.
What’s the point of this game, beyond letting them harvest user data to sell to data brokers? It doesn’t seem like this really integrates with Pokemon Go or the Switch games as far as syncing Pokemons between them, and anyone that actually cares about sleep tracking would be using their phone’s built-in health app or they’d have some top-rated sleep tracker from the app stores.
If it let you move Switch Pokemon over to be a day-care type thing while you sleep I could kinda see it having some use, but otherwise this just seems like shovelware with a Pokemon theme.