Apple may not be the industry leader in generative AI, but thanks to its monopoly on the app market,

 it is able to profit from others' successes. An iPhone app for ChatGPT that was released by OpenAI

 last week swiftly rose to the top of the App Store. In the free app category as of Friday,

ChatGPT was at the top, and Apple was marketing it as a "must-have" app under the "Essentials" 

Users can purchase a $20 monthly subscription to ChatGPT Plus from within the app,

gives quicker response times and first access to new features. 

Apple's in-app purchase system rather than sending visitors to a website where they can subscribe.