Privacy policy for Music Glyph

Effective 2 October 2026

Summary

Music Glyph draws a music visualizer on the Glyph Matrix on the back of a Nothing phone while music plays.

It does not collect, store, sell or share any personal data. It never records audio. It has no accounts, no ads, no analytics and no internet permission.

What the app accesses

• The sound your phone is playing. Music Glyph uses Android's audio visualizer to measure, many times a second, how loud the bass, mids and treble of the phone's own audio output are. Android protects this with the "Record audio" (microphone) permission, which is why the app asks for it. The measurements are used immediately to draw the visualizer and are then discarded. Audio is never recorded, saved or sent anywhere, and the app does not listen through the microphone. This happens while music is playing, including when the app is closed or the screen is off.
• Which app is playing media (optional). If you choose "Spotify only" and allow media detection, Music Glyph is given Android's Notification access. It uses this for one thing: to see which app currently has an active media session and whether it is playing. It does not read, store or send the contents of your notifications. You can use the app without this by choosing "Any music".
• Your settings in this app.

What the app does not do

It does not access your contacts, location, files, camera or messages. It contains no advertising or analytics software. It shares nothing with third parties.

Background activity

While the visualizer is switched on, Music Glyph runs a small background service that waits for music to start. Android shows a notification for it. You can turn it off in the app or from that notification, and you can withdraw either permission at any time in Android's settings.

Data kept and how to delete it

The only thing Music Glyph stores is your settings (for example the style and brightness you chose). They are kept on your phone, inside the app's private storage, and nowhere else.

To delete them, clear the app's storage in Android's App info screen or uninstall the app. There is nothing held anywhere else to delete.

Security

Music Glyph has no internet permission, so it cannot send anything off your phone. Everything it does happens on the device.

Children

Music Glyph is not directed at children and collects no data from anyone.

Changes to this policy

If the app's behaviour changes in a way that affects this policy, the policy will be updated in the app and on its web page, with a new effective date.

Contact

Music Glyph is made by an independent developer. For any privacy question, write to moryoav@gmail.com.