# Firebase Authentication

> Simple, multi-platform sign-in

- **Canonical URI:** https://www.vioscale.ai/software/firebase-authentication
- **Category:** Auth & Identity Software
- **Homepage:** https://firebase.google.com/products/auth
- **Also known as:** firebase-authentication
- **Profile claimed by vendor:** no
- **Last updated:** 2026-08-01T15:54:59.437Z

## Vioscale score

**65.5 / 100**, confidence 20% (low).

Composite of weighted, independently-sourced signals (no user reviews, no vendor payment).

| Signal | Score | Weight | Contribution | Evidence present |
|---|--:|--:|--:|:--:|
| price_level | 80 | 8 | 640 | ✓ |
| reliability | 50 | 18 | 900 | ✓ |
| capabilities | 67.1 | 12 | 805.4 | ✓ |
| integrations | 0 | 12 | 0 | - |
| security_posture | 0 | 40 | 0 | - |
| pricing_transparency | 80 | 10 | 800 | ✓ |

## Pricing

_As of 2026-08-01, [verify at source](https://firebase.google.com/products/auth). Independently observed._

Hybrid · Free tier

> Free tier with 50K MAUs, then usage-based pricing. Phone auth billed per SMS.

| Plan | Price | Free | Commitment |
|---|---|:--:|---|
| Spark | Free | ✓ | - |
| Blaze | Usage-based pricing, phone auth billed per SMS | - | - |

### Spark

No-cost plan with usage limits

**Included limits:** saml_oidc_maus: 50, identity_platform_maus: 50K

- Email and password authentication
- Phone authentication
- Social login (Google, Apple, X, Facebook, GitHub)
- FirebaseUI
- No payment method required

### Blaze

Pay as you go plan

- All Spark features
- Higher usage limits
- Phone auth billed per SMS
- Identity Platform SAML/OIDC available

## About

Provides backend services, easy-to-use SDKs, and ready-made UI libraries to authenticate users to your app. Supports email and password accounts, phone auth, Google, Apple, X, Facebook, and GitHub login.

_Independently observed._

## Platform & deployment

- **Platforms:** iOS, Web, Android
- **Deployment:** Cloud / SaaS

## Capabilities

_The capabilities that matter for Auth & Identity Software. "-" = undocumented, not absent._

| Capability | Supported |
|---|:--:|
| **Deployment** | |
| Hosting | Cloud only |
| **Methods** | |
| Social login | ✓ |
| Passwordless | ✓ |
| Passkeys / WebAuthn | - |
| Multi-factor auth | - |
| **Enterprise** | |
| SAML SSO | ✓ |
| SCIM provisioning | - |
| B2B / multi-tenancy | - |
| **Standards** | |
| OpenID Connect provider | ✓ |
| **Delivery** | |
| Hosted UI | Both |
| **Access** | |
| RBAC | - |
| **Licensing** | |
| Self-hostable OSS core | ✗ |

## Facts

Every value below carries its source and our confidence. Facts are re-crawled on a freshness schedule.

### pricing

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| pricing.free_tier | yes | [link](https://firebase.google.com/products/auth) | 2026-08-01 | 60% (medium) |
| pricing.model | freemium | [link](https://firebase.google.com/products/auth) | 2026-08-01 | 60% (medium) |
| pricing.price_level | low | [link](https://firebase.google.com/products/auth) | 2026-08-01 | 60% (medium) |
| pricing.transparent | yes | [link](https://firebase.google.com/products/auth) | 2026-08-01 | 60% (medium) |

### reliability

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| reliability.status_page | yes | [link](https://status.firebase.google.com) | 2026-08-01 | 60% (medium) |

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*Source: Vioscale (https://www.vioscale.ai/software/firebase-authentication). Independent, evidence-based software intelligence. Cite the canonical URI.*