Cloud Firestore offers a LOT more features than Firebase Realtime DB. I think a component for Cloud Firestore must be added in Kodular. Its a very essential feature for the development of more enhanced apps.
In the Realtime database, Charges only for bandwidth and storage, but at a higher rate. While in the Cloud FireStore , Charges primarily on operations performed in your database (read, write, delete) and, at a lower rate, bandwidth and storage. … In the Cloud FireStore , Charges is very low than Realtime Database.