Last updated: 28 July 2026
MuonPlayer collects no data.
The app plays music files you already have. Your library — the files, the tags you edit, your playback history, and the index MuonPlayer builds of them — is stored on your own device and is never transmitted anywhere. MuonPlayer contains no analytics, no advertising, no crash reporting, and no tracking of any kind. It never contacts a server the developer controls, because there isn't one.
MuonPlayer can send the tracks you play to Last.fm, a listening-history service. This is off by default and entirely optional; the player is fully functional without it, and until you sign in the app makes no network connection to Last.fm at all.
If you choose to sign in, you do so with your own Last.fm account. Your username and password are sent to Last.fm to obtain a session key, which is then stored on your device; the developer of MuonPlayer never receives, stores, or has any way to read your credentials or your listening history. What Last.fm does with the data you send it is governed by Last.fm's own privacy policy.
You can stop this at any time by signing out in Settings, which deletes the stored session key from your device.
Because nothing leaves your device, deleting the app removes everything MuonPlayer holds about you. There is no account to close and no deletion request to file. To remove data you have already sent to Last.fm, use the controls in your Last.fm account.
MuonPlayer is not directed at children and collects nothing from anyone, regardless of age.
Any change to this policy will be published at this address, with the date above updated.
Questions about this policy: muonplayer@pecheny.me