Opus 1 Music Player is an open-source (GPL-3.0-only) Android app by Andreas Kromke. The APK we host is 2.8 MB, it needs Android 5.0 or newer, and it declares 9 permissions.
The file on this page is Opus 1 Music Player 2.66, 2.81 MB, and it installs on Android 5.0 and newer.
We compared the signing certificate of this build with the certificate recorded the first time de.kromke.andreas.opus1musicplayer entered the site, and published both the file's SHA-256 and the certificate's fingerprint above so you can check the download yourself. That comparison says the file was not repackaged by someone else; it is not a review of what the app does.
The manifest declares 9 permissions, none of which cover contacts, location, SMS, the camera or the microphone.
Its licence is GPL-3.0-only. We took this build from F-Droid, and the source for this exact version is linked below.
We do not show a star rating or an install count for this page: we have no measured figure for either, and a number we cannot source is worth less than an empty field.
- Version
- 2.66
- Size
- 2.81 MB
- Requires Android
- API 21
- Package
- de.kromke.andreas.opus1musicplayer
- Signature checked on
- Sep 18, 2026
- Where this file came from
- F-Droid
- Licence
- GPL-3.0-only
- Source code
- Source for this version
File SHA-256: 440f3c9b260a4666c4ac027947bfbe4c673739aa933017a6566c72482855ea2c
Signing certificate (SHA-256): e9e3010de74a792037e8c068ac3a72f6d1f5eadd7a3c7ad656fa9d0c437fd9b1
We check that this file carries the same signing certificate as earlier releases of the same package. That shows the APK was not repackaged by someone else — it is not a security review of the app.
Declared permissions
- POST_NOTIFICATIONS
- WAKE_LOCK
- READ_EXTERNAL_STORAGE
- WRITE_EXTERNAL_STORAGE
- READ_MEDIA_AUDIO
- READ_MEDIA_IMAGES
- INTERNET
- MANAGE_EXTERNAL_STORAGE
- de.kromke.andreas.opus1musicplayer.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Screenshots
