Grand Theft Auto 5’s iFruit app has appeared on iTunes, and it lets you customise your vehicles and hang with Chop the dog.

The 444MB app has just popped up on iTunes. It lets you keep an eye on the Rockstar Social Club, and other Rockstar apps, as well as modifying cars while on the go. There’s even an app for Facebook spoof Lifeinvader.

The star attraction however is an app for Chop the Dog, who is listed as Franklin’s companion on the App Store. You can feed him, play games with him and improve his overall happiness in the full game. This will make him more likely to attack enemies, sniff out secrets and more.

Check out the screens below.

GTA 5 hits PS3 and Xbox 360 on September 17.