The General settings page contains a summary of your project and the apps that are part of it. It also lets you perform common tasks such as adding apps and modifying the settings for existing apps, and retrieving a GoogleService-Info.plist file for your iOS apps or a google-services.json file for your Android apps.
The apps card displays a list of Android package names and iOS Bundle IDs for all apps that are part of your Firebase project. This card allows you to add new apps and modify configuration settings for existing apps.
Add an app
You can add additional apps to your project through the app card. To add an app, click Add app and follow the setup flow.