Firestore have listeners included in the library? Or I must use RTDB

[Frtrillo]

Im assesing if Firestore is going to be cheaper than Realtime database for my project, but I need to listen for changes in the document/collection, so I started first using Realtime directly but Im looking at the prices now aswell.
So I wonder if I can listen for changes on Firestore on this library i.e when/after getting a document or a collection like in the examples: https://github.com/mobizt/Firebase-ESP-Client/blob/main/examples/Firestore/ListDocuments/ListDocuments.ino, https://github.com/mobizt/Firebase-ESP-Client/blob/main/examples/Firestore/GetDocument/GetDocument.ino .

I know you can listen to changes on Firestore with the SDK using a snapshot and its free, but I don't know if thats working or possible on the library for Firestore

[mobizt]

Please read this.