Petey is an AI assistant designed for devices like the Apple Watch, iPhone, and iPad. The app is built to interact with the prominent GPT model, coming with features that allow enhancing the user's experience significantly.

The app has numerous capabilities including creating playlists with Apple Music, viewing locations on Apple Maps and retrieving rich previews of URLs that it shares.

It also provides a history allowing user to continue conversation from where they left. The use of text to speech is another significant feature, letting the app read out answers for the user.

The user has the ability to change the icon shown in the complications and the GPT-4 version is also supported, although requires in-app purchase. There's also support for API keys which allows using GPT-4 at user's own cost.

A distinctive feature for iOS/iPadOS includes Live Activity which starts each time user starts a conversation with Petey. Other features include ability to share full conversation, detection of direct links and Apple Music integration.

To access Petey's capabilities, one just needs to open the app, ask questions or type a message, after which Petey will provide a response.