Adding Firebase In-app Messaging would allow us to send custom alert dialogs to users.
"Firebase In-App Messaging helps you engage users who are actively using your app by sending them targeted and contextual messages that nudge them to complete key in-app actions.
In-App Messaging integrates with Analytics and Predictions to give you advanced targeting capabilities. You have the power to send messages to users based on their actions (past, present, and future) and their interests. A guiding light within the app, in-app messages are highly contextual and relevant because they appear as a direct result of behavior.
You can easily tailor the design of in-app messages to match your brand so they feel like a native part of your app experience. You can also tweak the copy and content to appeal to different audiences and run a variety of engagement campaigns. Plus, you have the flexibility to choose between three formats - banner, modal, and image."