Shazam is a pioneering audio recognition service that can quickly listen to and identify music (as well as TV and likely other forms of media). The company and its employees were recently involved in a $400 million purchase by Apple who might look to integrate the service tightly with its iOS and Mac devices.
Shazam boasts more than 120 million active users, using the app 20 million times each day so giving this user base tigher integration with iOS devices will likely keep them longer. The Pixel 2 from Google has a feature that identifies music playing automatically and presents this information on the display.
Shazam can also be used to identify images, determine what TV show or movie is on and has some features related to QR codes and possibly AR (Augmented Reality) functionality. A quiet acquisition, Apple has yet to send out a detailed release about their plans for Shazam and what will happen to the app in other competing paltforms.
Source: CNBC