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Privacy Policy

Effective Date: October 24, 2026

1. Responsible Contact (Controller)

Dj Chami & Chantre Productions UG Germanusstrasse 30 52080 Aachen, Germany Email: music.logger.app@gmail.com

2. Audio Data Handling (Microphone Access)

To provide the core "Background Recognition" feature, the apps (Music Logger & Music Hunter) require the android.permission.RECORD_AUDIO permission.

Collection & Usage

  • Collection: We collect audio data solely for the purpose of identifying music playing in your environment.
  • Processing: Audio is processed in real-time. The audio stream is processed directly on your device to generate a unique digital fingerprint.
  • No Permanent Storage: We do not permanently store raw audio files on your device or our servers. The raw audio buffer is discarded immediately after the fingerprint is generated.
  • Fingerprints Kept on Your Device (Music Hunter): If a fingerprint finds no match when it is created, because you are offline or because the track is not (yet) known to the recognition service, Music Hunter keeps that fingerprint in its database on your device and checks it again later. A fingerprint is not a recording; no audio can be played back from it. It is deleted when the track has been identified, when you delete its session or your account in the app, when you tap "Clear fingerprints" (Settings -> Identify later), or at the next check after it has become older than the period you choose there (1, 3, 6 or 12 months; 6 by default). All fingerprints together take at most 25 MB; beyond that the oldest are removed first. Fingerprints are never uploaded to our servers.
  • Repeated Tracks (iOS): To recognise a track that plays again within a session, Music Hunter compares fingerprints of that session with each other on your device. Nothing leaves your device in this step.
  • No Audio Transmission: No raw audio files are ever transmitted to our servers or any third parties.

3. Third-Party Data Sharing

To provide our services, we partner with selected third-party providers.

3.1 Apple Music / ShazamKit

To identify songs, we use external services provided by Apple (Shazam). * Data Shared: Only an anonymous digital fingerprint is shared. This fingerprint cannot be reversed into intelligible audio. A fingerprint that found no match when it was created may be sent to the recognition service again later, when the app checks it again. * Purpose: To retrieve song metadata (Title, Artist). * Policy: Usage is also subject to Apple's Privacy Policy.

3.2 Spotify

We integrate with Spotify to provide direct playback features. * Data Shared: When you connect your Spotify account, we transmit search queries (Song Title, Artist) to Spotify to locate tracks. * Permissions: We request access to your basic profile (user-read-private) to authenticate requests. We do not access your private playlists or listening history. * Security: Authentication tokens are stored securely on your device. We do not process or store your Spotify credentials. * Policy: By connecting your account, you agree to Spotify's Privacy Policy.

3.3 YouTube Music (Google)

Music Hunter can export a recognised session as a playlist in your own YouTube Music library. This only happens when you start the export yourself. * Scope Requested: https://www.googleapis.com/auth/youtube ("Manage your YouTube account"). The YouTube Data API requires this scope to create a playlist and add items to it; the read-only scope cannot write. * Data Shared: Only the titles and artists of the tracks in the session you export. They are sent to the YouTube Data API to find the matching videos and to add them to a newly created playlist in your account. * What We Do Not Do: We do not read any other data from your Google account, we do not store content of your channel, and we do not share anything with third parties. * Security: The access token is stored on your device only. Our servers never receive it. * Withdrawal: Revoke access at any time in the app under Settings -> Connected Services, or at myaccount.google.com/permissions. * Limited Use: Music Hunter's use of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements. * Policy: By connecting your account, you agree to Google's Privacy Policy.

4. Data Retention & Deletion

  • Recognition Logs: Metadata (Title, Artist, Timestamp) is stored locally and, if Sync is enabled, in our secure Supabase cloud.
  • Fingerprints (Music Hunter): Fingerprints without a match are stored on your device (see Section 2) and are not synchronised to our cloud. Like the rest of the app's local data, they can be included in your device's own backups (for example iCloud or Google backup) if you have enabled them. Deleting a session or your account in the app removes the fingerprints belonging to it from this device; uninstalling the app removes all of them.
  • Account Deletion: You can delete your account and all associated cloud data at any time:
    • In-App: Settings -> Account -> Delete Account.
    • Email: Contact music.logger.app@gmail.com with the subject "Data Deletion Request".

5. Security

  • Encryption in Transit: All network communication is transmitted over secure HTTPS / SSL connections.
  • Encryption at Rest: Sensitive account data is encrypted in our cloud database.

6. Your Rights (GDPR)

Under the GDPR, you have the following rights: * Access & Correction: Request details or corrections of your data. * Deletion: Request the erasure of your data. * Withdrawal of Consent: Revoke microphone permissions at any time in device settings. * Complaint: Lodge a complaint with a supervisory authority (e.g., LDI NRW).