I don't do anything to identify any of my users.

I'm only using Firebase to detect the following errors :

• When there's an error fetching the raw YouTube stream URL from a YouTube link
• When there's an error picking a video from the library (I don't have access to the video nor any of its metadata)
• When there's an error picking a video from iCloud Drive (I don't have access to the file, nor any of its metadata)
• When there's an error updating the configuration
• When there's an error trying to start the audio session to play videos in background
• When the application crashes

I'm using the device identifier to help me understand crashes.
This is a unique identifier given to me be Apple and I can't by any way link it to a user (documentation)

Let me know if you have any issue by contacting me through the application, by mail at maxime.dechalendar@me.com or on Twitter.