Google Firebase / Cloud Firestore

Firebase


"A comprehensive mobile development platform"

Firebase - Wikipedia

Firebase is a mobile and web application development platform developed by Firebase, Inc. in 2011, then acquired by Google in 2014.[5] As of October 2018, the Firebase platform has 18 products,[6] which are used by 1.5 million apps.

Firebase pricing


Google’s Cloud-Native NoSQL Database Cloud Firestore Is Now Generally Available