FirebaseGoogle's app development platformFirebase Spark plan: no-cost tier with free quotasFirebase's Spark plan is free with no payment method, including no-cost quotas for Firestore, Realtime Database, Hosting and Authentication, and unlimited use of products like Crashlytics and Cloud Messaging.Free planOfficialNo credit cardNo-cost Spark planUnverifiedView dealfor Firebase (opens provider site in a new tab)