Your library lives in a folder on a drive you control. Cassetteur plays from that folder, one album at a time, the way a record collection works.
It’s for people who own their music — albums bought as files, CDs ripped years ago, live recordings traded the old way — and would rather put on a whole record than a stream.
iPhone Coming soon to the App Store
Mac Later
Free No ads, no subscriptions
A
What it does
Albums first. Cassetteur plays an album from its first track to its last, the way it was made. Dislike a track and that album leaves it out next time. The file is never touched, and you can always bring the track back.
Your files, your folder. Choose a folder of albums on a USB‑C drive, on your iPhone or in iCloud Drive. FLAC, ALAC, AIFF, WAV, MP3, AAC and DSD all play. What Cassetteur remembers about your albums is kept inside that folder, so it goes wherever the drive goes.
Bit-perfect, DSD included. With a USB DAC, Cassetteur can play your music bit-perfect, past the iPhone’s mixer. DSD plays everywhere: converted to high-resolution PCM, or sent as the original DSD, over DoP, to a DAC that takes it.
Gapless. A live show or a continuous album runs from one track into the next without a break.
Tags, your way. Tag albums however you think about them, then choose tags to narrow the shelf: pick two and you see only the albums that have both. Hide the ones you’re saving for later. Siri can start a tag by voice.
Keys and controllers. Use Cassetteur from a hardware keyboard or a game controller, and change what the keys and buttons do.
B
What it doesn’t do
No account. There’s nothing to sign up for and nothing to sign in to.
No ads, no analytics, no tracking. None of any kind.
Nothing sent to us. There’s no Cassetteur server. The app sends us nothing.
Never your music. To fill in album names, years and covers, Cassetteur asks MusicBrainz, AcoustID, the Cover Art Archive and Apple, sending album and artist names or an acoustic fingerprint — never the audio. One switch turns that off.
Data Not Collected
That’s its App Store privacy label. The privacy policy lists exactly what goes where.
Cassetteur is three words at once.
Cassette
From the 1970s through the 1990s, sharing music was a kitchen-table activity: dubbed tapes, swapped mixtapes, libraries built by copying from friends. The home tapers built a generation’s listening culture.
Connoisseur
The French ending -eur, for someone with taste: a listener who chooses deliberately and respects what they hear.
Saboteur
The same ending, the other lineage: someone who opts out of a system that doesn’t serve them and builds the alternative.
Cassetteur is all three: the copyist, the connoisseur and the saboteur.
