Rockstar has revealed that Red Dead Redemption 2 will be receiving an official companion app that will be launching alongside the game on iOS and Android on October 26, 2018.
Announced via Rockstar’s website, the Red Dead Redemption 2 Companion App will connect to your PlayStation 4 or Xbox One and will deliver “real-time interactive information to your smart device.”
Source: IGN.com Red Dead Redemption 2 Official Companion App Revealed