Privacy Policy

English translation · Original last updated November 7, 2026

Data controller

BandMATRIX (the app) is an Android application developed by OSCAR VAZQUEZ MOSQUERA, based in Spain. For privacy matters, email soporte.bandmatrix@gmail.com. This policy explains what the app processes, why and what choices you have.

Summary

The app requires no account or sign-in. Sheet music, setlists, annotations and settings are stored only on your device. We do not receive or store them on our own servers. The app shows no ads and includes no third-party analytics or tracking. We do not sell or disclose your data.

Information stored on your device

The app stores references to PDFs, images and EPUB files (basic viewing), and the information you add, including title, band, cover art, cropping, zoom, duration, metronome settings, MIDI patches and annotations. It also stores setlists, app settings, chosen or downloaded cover art, thumbnails generated from PDFs, and MIDI pedal and button mappings. These data are stored internally and removed when you uninstall the app.

Permissions and their purpose

Internet: search for cover art, download your calendar and use Google Play for Pro purchases. Microphone: the tuner analyzes instrument audio in real time on the device. Audio is never recorded, saved or transmitted. Bluetooth and nearby devices: discover and connect Bluetooth MIDI pedals and adapters and find nearby phones in group rehearsals. These permissions are not used to determine your location. Location (Android 12 or earlier): Android requires it to find Bluetooth and Nearby devices. The app neither uses nor stores it to locate you. Wi-Fi and local network: enable group rehearsals over a router or Wi-Fi without internet. Notifications and foreground service: keep the metronome playing with the screen off. Keep device awake: prevent interruptions to the display or audio while reading or rehearsing. File access (Android 12 or earlier): open the sheet music and images you select.

Files you choose

The app accesses only files and folders you select using the system file picker, such as a Google Drive folder containing your sheet music.

Third-party services and information sent off-device

Google Play purchases: Google Play Billing processes payments and associated data under Google’s privacy policy. The app only receives confirmation that Pro is active and does not receive payment details. Group rehearsal: your phone communicates directly with nearby phones via Google Nearby (Google Play services) or local Wi-Fi. The devices exchange their names, the title of the open score and the score file only if you send it. These data do not pass through our servers. Cover-art search: your query, usually the song title, is sent to Apple’s iTunes Search API, MusicBrainz and Cover Art Archive to retrieve images. These services may see your IP address and query under their own policies. Optional calendar: if you enable the calendar and enter your private Google Calendar iCal address, the app stores it on your device and uses it to download the calendar directly from Google. It does not pass through our servers. Backups: the app creates a ZIP on your device. You choose where to save it, such as Drive, Dropbox or your phone. Further handling depends on the chosen service.

Retention and deletion

We have no data to retain or delete on our servers. Local data remain while the app is installed. To delete them, uninstall the app or clear app data in Android settings. You can remove sheet music, covers and setlists in the app.

Security

Data are stored in the app’s internal storage protected by Android. Internet connections use secure channels where supported by the service. No system is infallible, but we operate no server containing your data.

Children

The app is not directed to children under 13 and does not knowingly collect children’s personal data.

Your rights

If you live in the European Economic Area, you have rights to access, correct, delete, restrict processing of, object to processing of and receive a portable copy of your personal data. Since the app stores no data on its own servers, you can exercise these rights directly on your device. Contact soporte.bandmatrix@gmail.com with questions. You can also complain to your country’s supervisory authority, such as the Spanish Data Protection Agency at www.aepd.es.

Changes to this policy

We may update this policy when the app changes. The last updated date identifies the current version. Material changes will be communicated in the app or on its Google Play listing.

Contact

OSCAR VAZQUEZ MOSQUERA · soporte.bandmatrix@gmail.com

Texto original en español