What users are saying about
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59 Ratings
Top Rated
55 Ratings

Auth0

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59 Ratings
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Score 8 out of 100
Top Rated
55 Ratings
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Score 8.4 out of 100

Highlights

Auth0 and Firebase are competing application development platforms. Auth0 is an IAM solution enabling developers to add MFA, SSO, and passwordless login to their apps. Acquired in March 2021, Auth0 is now an Okta product. Firebase, from Google, is a mobile app oriented suite supporting customer authentication using passwords, phone, or social (federated) login. As competing solutions for adding customer login and authentication to apps, Firebase and Auth0 both tend to be deployed by cost conscious smaller companies that offer mobile applications to end users outside an organization.

Features

Depending on the developer’s intended use for an application, there are reasons to use either Firebase or Auth0.

For a simple customer authentication solution, Firebase Authentication presents a compelling solution. It supports authentication with a phone number, password, and federated identity providers like Google. When developers are building an app with a Firebase backend, it’s hard to beat a free, integrated solution with a low price that scales predictably with growth. Users of Firebase state that authentication is one of Firebase’s strongest components, and describe it as one of the very easiest solutions to implement long as developers don’t need more advanced user or identity management capabilities.

For apps facing greater security regulations or risk, or for apps with internal users, then Auth0 may present a better choice. Auth0 can provide a range of features that Firebases’s Authentication component does not offer. These features include a highly customizable authentication flow, integration with Active Directory or other enterprise identity management systems, social login where Google, Twitter, or Facebook are not a preferred option, more stringent or regulation compliant user data storage (e.g. HIPAA or GDPR compliance), and more powerful security features, like bot detection, and brute-force protection.

Limitations

While solid options, there are drawbacks to both Firebase’s Authentication solution for a mobile app, or Auth0’s.

Firebase Authentication presents a very simple solution. It is not sophisticated enough for advanced enterprise security needs or for stringent data compliance. For instance, if a project requires multi-factor authentication, breached password security, enterprise AD integration, integration with a backend database other than Firebase’s own (Firestore), or app user data enrichment, then another solution is preferred.

Auth0 can help developers with these issues, but users of Firebase for app development tend to be cost conscious. One of the foremost complaints against Auth0 is that while there are many functions available free, making it attractive to developers in the early stages of a product, pricing scales steeply, and it is frustratingly unclear at times what a needed or attractive feature may ultimately cost. 

Pricing

Auth0 is free with up to 7,000 external active users with unlimited logins. The developer plan, starting at $23 per month, supports 50,000 external MAUs and features unlimited social connections, and role management. The Developer Pro plan starts at $130 per month and supports up to 7,000 MAUs but adds 3 enterprise connections, pro MFA and enhanced password protection. For internal users, developers require the Developer Pro plan, starting at $220 per month for up to 500 employees (100 MAUs), or an Enterprise plan to support more than 500 employees or MAUs.

Firebase Authentication is free on a Firebase Spark plan, for up to 10k successful verifications  of app users each month. This service also includes Firebase services such as Crashlytics, A/B testing, and other mobile app analytics. For more than 10k successful user verifications, users move up to the Firebase Blaze plan. On the Blaze plan, authentications are $.01 per authentications from user verifications from the US, India, or Canada. Outside these regions, verifications are 6c per successful verification.

Auth0 is an identity management platform providing authentication and authorization as a service for app builders, and Firebase is an application development suite that includes components to support both web and mobile development. Developers building with Firebase apps may use Firebase’s own Authentication solutions (including the recommended FirebaseUI Auth component) to build a complete authentication solution for their mobile app, or they may integrate a preferred solution, such as Auth0. So While Auth0 can be integrated into a Firebase project, Firebase also competes with Auth0 by offering its own customer authentication solution for web and mobile apps built with Firebase. Firebase and Auth0 both tend to be deployed by cost conscious smaller companies, or small teams just getting off the ground.

Features

If building with Firebase, there are reasons to stick with Firebase’s own authentication app, vs adding Auth0, and vice-versa.

For limited login options and authentication where a Firebase database backend is being used for an application, Firebase Authentication is probably wholly adequate. It supports authentication with a phone number, password, or federated identity providers like Google. In this case, it’s hard to beat a free, integrated solution. Additionally, users of Firebase state that authentication is one of Firebase’s strongest components, and describe it as one of the very easiest solutions to implement around,so long as developers don’t need more advanced user or identity management capabilities.

If an app is not using Firebase’s database backend, then Auth0 instantly presents a more appealing option. Features that Auth0 can provide that Firebases’s Authentication component cannot include a highly customizable authentication flow, integration with Active Directory or other enterprise identity management systems, social login where Google, Twitter, or Facebook are not a preferred option, more stringent or regulation compliant user data storage (e.g. HIPAA or GDPR compliance), and more powerful security features.

Limitations

While solid options, there are reasons to not implement either Firebase’s Authentication solution for a mobile app, or Auth0’s.

As stated, Firebase Authentication specializes as a very simple solution. For advanced enterprise security needs or for stringent data compliance, it simply won’t do. For instance, if a project requires multi-factor authentication, breached password security, enterprise AD integration, integration with a backend database other than Firebase’s own (Firestore), or app user data enrichment, then another solution is a must.

Auth0 can help developers with these issues, but users of Firebase for app development tend to be cost conscious. One of the foremost complaints against Auth0 is that while there are many functions available free, making it attractive to developers in the early stages of a product, pricing scales aggressively, and sometimes surprisingly.

Pricing

Auth0 is free with up to 7,000 external active users with unlimited logins, or 500 insider active users. The paid developer plan adds additional features including up to 2 days of log retention and 1 log stream, role management, and other features, starting at $23 per month per 1000 external authenticated users, with additional tiers for more users; all tiers cost about $.23 per user. For employee support with social login, MFA, and enterprise identity support (e.g. Active Directory), the Developer Pro plan is required. Its pricing depends on the number of internal users, external users, and machine to machine tokens included.

Firebase Authentication is free on a Firebase Spark plan, for up to 10k successful verifications  of app users each month. This service also includes Firebase services such as Crashlytics, A/B testing, and other mobile app analytics. For more than 10k successful user verifications, users move up to the Firebase Blaze plan. On the Blaze plan, authentications are $.01 per authentications from user verifications from the US, India, or Canada. Outside these regions, verifications are 6c per successful verification.

Likelihood to Recommend

Auth0

Auth0 is mainly a solution for authentication and authorization. And it does what it promises in that aspect, but I also find it very helpful when it comes to customer support because I can see a lot of crucial information about user activity. So we have allowed our customer services team members to access auth0 backend log files for troubleshooting user login issues, etc. And the backend administration site is fairly easy to understand. Metadata along with Rules and Hooks allow for flexibility for token generation . Multiple ways to authenticate.
Anonymous | TrustRadius Reviewer

Firebase

If you are having an application which requires authentications of users and want to have a central space where you can store all your user data, Firebase is a lifesaver. You can deploy your application once and then control all the operations from the console itself.In case your applications do not require any authentications and simply available to all the users who download/install it, Firebase might be of less use in that case.
Anonymous | TrustRadius Reviewer

Feature Rating Comparison

Identity Management

Auth0
8.4
Firebase
ID-Management Access Control
Auth0
9.0
Firebase
ID Management Single-Sign On (SSO)
Auth0
9.5
Firebase
Multi-Factor Authentication
Auth0
8.0
Firebase
Password Management
Auth0
7.8
Firebase
Account Provisioning and De-provisioning
Auth0
8.2
Firebase
ID Management Workflow Automation
Auth0
8.7
Firebase
ID Risk Management
Auth0
7.6
Firebase

Pros

Auth0

  • The Auth0 documentation provides plenty of examples and tutorials for users to get up and running quickly
  • Auth0 is very flexible, it has a lot of pre-build authentication methods but also allows you to customize your method of authentication if you need to build off an internal provider
  • The Auth0 user interface is generally intuitive and it has detailed logs to assist with auditing
  • Auth0 comes at a very competitive price-point if your platform doesn't require a huge number of users (the free tier alone could be sufficient for many)
Eric Mason | TrustRadius Reviewer

Firebase

  • Analytics wise, retention is extremely important to our app, therefore we take advantage of the cohort analysis to see the impact of our middle funnel (retargeting, push, email) efforts affect the percent of users that come back into the app. Firebase allows us to easily segment these this data and look at a running average based on certain dates.
  • When it comes to any mobile app, a deep linking strategy is essential to any apps success. With Firebase's Dynamic Links, we are able to share dynamic links (recognize user device) that are able to redirect to in-app content. These deep links allow users to share other deep-linked content with friends, that also have link preview assets.
  • Firebase allows users to effectively track events, funnels, and MAUs. With this simple event tracking feature, users can put organize these events into funnels of their main user flows (e.g., checkout flows, onboarding flows, etc.), and subsequently be able to understand where the drop-off is in the funnel and then prioritize areas of the funnel to fix. Also, MAU is important to be able to tell if you are bringing in new users and what's the active volume for each platform (Android, iOS).
Sam Lepak | TrustRadius Reviewer

Cons

Auth0

  • Price point for ALL features can get a bit pricey. But they have a startup plan which helps big time. Developer plans start at $23/mo and do not include all features.
  • Actions, rules, hooks, and email customization are great features, but the UI is a bit tough sometimes, not very responsive to screen size and code editors are cut off in a difficult place to maneuver.
Brady Perry | TrustRadius Reviewer

Firebase

  • Attribution and specifically multi-touch attribution could be more robust such as Branch or Appsflyer but understand this isn't Firebases bread and butter.
  • More parameters. Firebase allows you to track tons of events (believe it's up to 50 or so) but the parameters of the events it only allows you to track 5 which is so messily and unbelievable. So you're able to get good high-level data but if you want to get granular with the events and actions are taken on your app to get real data insight you either have to go with a paid data analytics platform or bring on someone that's an expert in SQL to go through Big Query.
  • City-specific data instead of just country-specific data would have been a huge plus as well.
Evan Laird | TrustRadius Reviewer

Usability

Auth0

No score
No answers yet
No answers on this topic

Firebase

Firebase 9.5
Based on 2 answers
It is simple to use overall, the console's main menu is divided into Develop, Quality, Analytics and Grow - which have further subdivisions by their set of features and tools. Develop and Quality are relevant for product and tech. Analytics is relevant for product, analytics and Grow is relevant for marketing. This makes the overall use very easy.
Anonymous | TrustRadius Reviewer

Support Rating

Auth0

Auth0 6.0
Based on 2 answers
There isn't a clear method to get a hold of support when trouble arises if you're on their standard plan. You can file a support ticket and they generally are responsive. I've often been able to find similar questions to the questions I've had when it comes to support in their ticket history, however, some have been closed without a satisfactory conclusion for the original poster.
Eric Mason | TrustRadius Reviewer

Firebase

Firebase 7.2
Based on 16 answers
Our analytics folks handled the majority of the communication when it came to customer service, but as far as I was aware, the support we got was pretty good. When we had an issue, we were able to reach out and get support in a timely fashion. Firebase was easy to reach and reasonably available to assist when needed.
Anonymous | TrustRadius Reviewer

Alternatives Considered

Auth0

Okta is very similar to Auth0, but we got some references that used Auth0 so we decided for that, most because it was recommended.With Amazon Cognito was the same, there were not experience with any of these before so we went with Auth0 as first experience and stayed with it.
Iván García | TrustRadius Reviewer

Firebase

Before using Firebase, we exclusively used self hosted database services. Using Firebase has allowed us to reduce reliance on single points of failure and systems that are difficult to scale. Additionally, Firebase is much easier to set up and use than any sort of self hosted database. This simplicity has allowed us to try features that we might not have based on the amount of work they required in the past.
Anonymous | TrustRadius Reviewer

Return on Investment

Auth0

  • With Auth0, we saved a lot of time and money implementing identity management that would work across all of our services instead of doing it ourselves.
  • There's no going back from Auth0. We've become really dependent on them.
  • It reduces a lot of burden on our side to be GDPR compliant.
Anonymous | TrustRadius Reviewer

Firebase

  • Makes building real-time interfaces easy to do at scale with no backend involvement.
  • Very low pricing for small companies and green-fields projects.
  • Lack of support for more complicated queries needs to be managed by users and often forces strange architecture choices for data to enable it to be easily accessed.
Anonymous | TrustRadius Reviewer

Screenshots

Pricing Details

Auth0

General

Free Trial
Yes
Free/Freemium Version
Yes
Premium Consulting/Integration Services
Yes
Entry-level set up fee?
Optional

Auth0 Editions & Modules

Edition
1,000 External Active Users$231
2,000 External Active Users$571
5,000 External Active Users$1141
10,000 External Active Users$2281
20,000 External Active Users$4551
50,000 External Active Users$1,1381
Over 50,000 External Active UsersContact for quote
500 External Active Machines$1303
EnterpriseContact for quote
  1. per month
  2. per month
Additional Pricing Details
Flexible pricing for everyone. View our pricing page to lean which plan is right for you.

Firebase

General

Free Trial
Free/Freemium Version
Premium Consulting/Integration Services
Entry-level set up fee?
No

Firebase Editions & Modules

Edition
Phone Authentication$0.011
Stored Data$0.182
  1. Per Verification
  2. Per GiB
Additional Pricing Details

Rating Summary

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