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Last updated: 03.11.2026

Mufify ("the app") is a free, open-source, offline-only music player for Android, developed by Yefee ("I", "me", "the developer"). This policy explains what happens to your information when you use the app.

Summary

Mufify does not collect, transmit, share or sell any personal data. The app has no network layer: release builds ship without the Android INTERNET permission, so the app technically cannot send data anywhere. There are no accounts, no analytics, no advertising and no telemetry.

Information the app does not collect

• No personal information (name, email, phone number, address, etc.)
• No account or sign-in data (there are no accounts)
• No location data
• No device identifiers, advertising IDs or usage analytics
• No crash reports sent to me or to any third party
• No audio recordings (the app does not request the microphone permission)

Information stored on your device

To work, the app stores the following data only on your device, in its private app storage:

• Music library index: titles, artists, albums, durations and technical details (bitrate, sample rate, bit depth, codec, file size) read from the audio files on your device.
• Listening history and statistics: play counts and rollups used to show your top tracks, artists, albums and playlists by week, month and year, including the "Wrapped" summary.
• Playlists, likes and queue: playlists you create, tracks and playlists you like, and your playback queue.
• Settings: theme, language, shuffle algorithm, equaliser presets and similar preferences.