Rockstar Games have announced the Companion App for their upcoming release, Red Dead Redemption 2. This app connects an Android or iOS device to the console in question, and allows the player to view maps, stats and progress on their phone or tablet while gaming.
https://www.notebookcheck.net/Red-Dead-Redemption-2-Companion-App-will-put-your-game-s-map-on-your-phone.346036.0.html