A Firebase Auth Alternative With User Data Built In

Why do developers look for a Firebase Auth alternative?

Firebase Authentication only knows who a user is. Their notes, settings and orders live in Firestore, and you connect the two by writing security rules that compare request.auth.uid with a field on every document. Get one rule wrong and a user can read someone else's data.

Other common reasons are vendor lock-in to Google Cloud, costs that are hard to predict on reads and writes, and wanting a plain REST API that any language can call.

How is Neuctra Authix different from Firebase?

In Neuctra Authix every record belongs to the user who created it. When a browser or mobile app calls the API with an API key, the server pins the request to the signed-in user, so they can only reach their own records. You do not write ownership rules; the API enforces them.

• One SDK for sign-up, login, sessions and data, instead of Auth plus Firestore.
• Schemaless JSON records grouped into categories such as notes or orders.
• Built-in search, cursor pagination, optimistic versioning and atomic batch writes.
• Flat monthly pricing with no charge per read or write.

Neuctra Authix vs Firebase Auth at a glance

How do you get started with Neuctra Authix?

1. 1

   Create an app

   Sign up for a free Neuctra Authix account and create an app in the dashboard to get an app ID and an API key.

2. 2

   Install the SDK

   Install the JavaScript, Python, or Dart SDK on your backend and create a server-side client with your app ID and account API key.

3. 3

   Sign users up and in

   Call signupUser and loginUser. Sessions are handled with an HttpOnly cookie, and email verification and password reset are built in.

4. 4

   Store data for each user

   Verify the visitor in your backend, derive their user ID from that session, and use it for Authix user data operations.

import "server-only";
import { NeuctraAuthix } from "@neuctra/authix";

const authix = new NeuctraAuthix({
  appId: process.env.AUTHIX_APP_ID,
  apiKey: process.env.AUTHIX_API_KEY,
});

// In a backend route, first authenticate the visitor with your app's session.
const userId = await requireAuthenticatedUserId(request);

// Then pass only that verified id to Authix.
await authix.addUserData({
  userId,
  dataCategory: "notes",
  data: { title: "First note", pinned: true },
});

When should you stay on Firebase?

Stay on Firebase if you need social or phone sign-in, multi-factor authentication, realtime listeners or offline sync. Neuctra Authix does not do those today, and we would rather you know now than after a migration.

Frequently asked questions

Related guides

• Clerk alternative without user sync
• Store user data without a backend
• Flutter authentication guide
• React authentication guide