react-native-popup-menu VS react-native-firebase

2) i tried some external libraries (like https://github.com/instea/react-native-popup-menu) but some libraries either do not work (crash due to unmaintained library) or was too much of a hassle

I recommend using React Native Paper UI library. It takes care of the material UI designs of the various components, including paddings, color (dark or light theme), behavior and more. Add on packages like React Native Popup Menu has beautiful interactivity.

I use React Native popup menu and it looks just like the above. Not sure if it is compatible with Expo.

We'll be utilizing React Native Firebase for this.

I used Expo-React native so I didn't use directly rnfirebase.io.

I found someone who had a similar issue: https://github.com/invertase/react-native-firebase/issues/1317

Otherwise, if you want remote storage a many other useful backend capabilities without writing and maintaining your own backend (messaging, remote updates, etc.) you can use Firebase. This is a very useful suite of tools from google that lots of people use that can handle Social Authentication, Push Notifications, Analytics, A few different kinds of data bases with both local and remote persistence. You won't need this for your todo but you might want to use it if you're making something more serious.

I’m following the exact same instructions as found here [https://rnfirebase.io/] but once I’m done with all the steps and build my project again, I get a very very long error that even my VS Code zsh terminal just cuts off.

Just add the code it does all I’m using https://rnfirebase.io/ if expo does support firebase it might work the same, use expo docs instead..

For firebase analytics just check out https://rnfirebase.io/ and read their documentation. It works for me! Also don‘t forget to build a custom dev client with eas.

If it is a bare RN application, make sure to follow the steps here to set up the SDK. Once you have set up the SDK, you need to set up all other services you are using on Firebase. For example, if you’re using Firestore, go to the Firestore usage docs and set it up.