The tech works by letting Shazam track the audio signals coming from other apps instead of only analyzing external sounds. The Shazam app uses a persistent notification to accomplish that task. TechCrunch picked up on the development, and successfully tested Pop-Up Shazam with YouTube, Instagram, and TikTok.
For now, the feature is limited to Android devices, which seems unusual for the Apple-owned Shazam. Apple’s iOS doesn’t support persistent notification, plus it tends to hold software on its App Store to stricter standards than Android. It’s possible that there are reasons why Apple hasn’t launched this feature within its own ecosystem. Given Shazam’s integration with Siri, it’s possible that the team will have a different approach to offering the same functionality at a later date.