Turn Zero Cloud compared with Firebase
Firebase is Google's platform of services for building and running apps: Firestore and the Realtime Database, Authentication, Cloud Storage, Cloud Functions, Hosting and App Hosting, Cloud Messaging, and AI Logic. Turn Zero Cloud is a production backend for an application your coding agent builds: it runs the application's own Node.js server beside its database, file storage, sign-in, scheduled jobs, AI calls, and push notifications, through one MCP connection.
Firebase is a product of Google LLC, named here for comparison only. This page is Turn Zero's, and Firebase has neither reviewed nor endorsed it.
The short version
- Firebase gives you services your app calls, with Cloud Functions for backend code that runs on events and requests. A whole web server runs on App Hosting, with preconfigured support for Next.js and Angular.
- Turn Zero Cloud runs the application itself, server and backend together, at its own address. Your coding agent deploys it and reads its logs through the connection it built it with.
- Firebase prices by usage: the Spark plan at no cost within set limits, and the pay-as-you-go Blaze plan, which Cloud Functions, App Hosting, and Cloud Storage need. Turn Zero Cloud prices per application: one free application for each account, then $10 or $35 a month.
- Both offer an MCP server that Claude Code can use. What the server lets the agent do differs, as the table shows.
Side by side
Firebase's facts are read from its pricing and documentation pages on 2026-10-06. Check those pages for current figures.
| On | Turn Zero Cloud | Firebase |
|---|---|---|
| What it is | A production backend for an application built with a coding agent: the server and its services in one place. | A platform of app services on Google Cloud: databases, sign-in, file storage, functions, hosting, messaging, and AI calls. |
| Your application's server | Hosted. A Node.js server in its own container, at its own address under ai.host. | Hosted by App Hosting on the Blaze plan: built with Cloud Build and served on Cloud Run, with preconfigured support for Next.js and Angular; Express apps generally work, without a guarantee. Cloud Functions run backend code on events, HTTPS requests, and schedules. |
| Database | A PostgreSQL database for each application, created with it. | Cloud Firestore, a NoSQL document database with realtime listeners and offline support, and the Realtime Database. SQL Connect, formerly Data Connect, adds PostgreSQL on Cloud SQL. |
| Sign-in for your users | Included: accounts and passkeys, with open or invitation-only sign-up, its users managed from your coding agent. | Included: Firebase Authentication, with email and password, phone numbers, Google, Apple, GitHub, and other providers, plus SAML and OpenID Connect with the Identity Platform upgrade. |
| File storage | Included, for each application. | Included: Cloud Storage for Firebase, which has needed the Blaze plan since February 3, 2026. |
| Scheduled jobs | Included, with each run's outcome recorded. | Scheduled functions, invoked by Cloud Scheduler: $0.10 a month for each job, with three jobs for each Google account at no charge. |
| AI calls | From inside your application, on an allowance every plan includes or on your own key. | Firebase AI Logic: Gemini models called from your mobile or web app through its client SDKs, billed at Google Cloud or Gemini Developer API prices. |
| Push notifications | Included, to iPhone and Android. | Included: Firebase Cloud Messaging, to Apple, Android, and web apps, at no cost. |
| Secrets | Stored by name through the connection, typed into your own terminal and never into the chat; an outside API's key is replaced without a redeploy. | Stored in Cloud Secret Manager and set with the Firebase CLI. App Hosting reads them through apphosting.yaml, and each rollout loads a secret's value, pinned to the version current when the backend was built. |
| Deploys, logs, and rollback | Your agent deploys and rolls back versions, promotes from a development environment when you add one, and reads each version's logs, counters, and deploy steps. | App Hosting rolls out on each push to a GitHub branch, rolls back to an earlier build, and shows logs and metrics in the console. Hosting has one-click rollbacks, and function logs come from Cloud Logging. |
| MCP server for coding agents | One server: it creates the application, stores its secrets, deploys it, and reads its logs and status. | One server, run locally, for Claude Code and other clients: it creates projects and apps, works with Firestore data and Auth users, deploys what firebase.json configures, sends push messages, and reads function and App Hosting logs. |
| Free plan | One free application for each account; its capacity is on the pricing page. | Spark: 1 GiB of Firestore data with 50,000 reads and 20,000 writes a day, Authentication's sign-in, 10 GB of Hosting storage, and Cloud Messaging; Cloud Functions, App Hosting, and Cloud Storage need Blaze. |
| Paid plans | Standard at $10 and Pro at $35 a month, for each application; every plan is free during the beta. | Blaze, pay as you go: the no-cost amounts stay, and usage beyond them is billed at Google Cloud rates, such as $0.40 a million function calls after 2 million a month. Eligible accounts get $300 in free credit. |
When Firebase fits better
You are building a mobile or web app that works with its data directly: Firestore's realtime listeners and offline support, sign-in through many providers, push messages to Apple, Android, and the web, and Gemini calls from the client SDKs, all inside Google Cloud with a no-cost plan to start. Or the app is Next.js or Angular, and App Hosting's deploy on every push to GitHub suits how you work.
When Turn Zero Cloud fits better
Your coding agent is building a whole application around its own Node.js server, and you want that server, a PostgreSQL database, sign-in, and the rest created and deployed by the agent through one connection, rather than set up across several services on a Google Cloud billing account. One plan for each application prices it, rather than usage across services. The application may be for the web, a phone, or the desktop.
Using both
An application on Turn Zero Cloud can call any outside service on keys stored by name, Firebase included. If an app's data already lives in Firestore, the application's server can run here and keep reading it, or send push messages through Cloud Messaging.