Game Companion: Elden Ring is a free, unofficial game companion app for Android devices. It offers a comprehensive map with all the important locations in the game, along with detailed descriptions of each location. The app allows you to filter locations based on their type and mark them as completed to keep track of your progress.

Game Companion: Elden Ring also offers a light and dark theme, making it easy on the eyes. The app works offline, so you don't need an internet connection to access it. You can search for locations by their name or description and even create custom locations.

In addition to the map, the app also includes two maps: The Lands Between and Undergrounds. You can view PSN/Playstation trophies and Xbox achievements and mark them as completed to keep track of your progress. However, it should be noted that this is an unofficial app, and the developer is not affiliated with From Software or Bandai Namco in any way.

Overall, Game Companion: Elden Ring is a useful tool for any Elden Ring player who wants to keep track of their progress and explore the game thoroughly.