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Auth0 Pricing and Integration Costs - A Complete Guide

June 30, 2025

This guide breaks down the full financial and technical investment required for implementing the Auth0 authentication platform. Speak with an Auth0 expert at MetaCTO to integrate robust, secure authentication into your product.

Chris Fitkin

Chris Fitkin

Founding Partner

Auth0 Pricing and Integration Costs - A Complete Guide logo

Introduction to Auth0

In modern application development, managing user identity securely and efficiently is not just a feature; it is a foundational requirement. Users expect seamless sign-up, login, and access control, while developers need a robust system that protects against threats without requiring them to become cryptography experts overnight. This is the problem that Auth0, an authentication and authorization platform, was built to solve.

Auth0 provides a universal identity platform for web, mobile, and legacy applications. It abstracts the immense complexity of identity management—from simple username/password logins to complex multi-factor authentication (MFA), social logins (e.g., “Login with Google”), and enterprise federation (e.g., SAML)—into a manageable set of APIs and tools. For businesses, this means faster time-to-market, enhanced security, and a better user experience.

However, adopting any powerful platform comes with costs, both direct and indirect. Understanding the complete financial picture is critical for budgeting and making informed architectural decisions. This guide will provide a comprehensive breakdown of what it truly costs to use, set up, integrate, and maintain Auth0. We will explore its various pricing plans, uncover potential hidden fees, delve into the technical challenges of integration—particularly for mobile apps—and discuss the value of partnering with an expert team to ensure a successful implementation.

How Much Does It Cost to Use Auth0?

Auth0’s pricing is designed to be flexible, scaling with your application’s user base and feature requirements. The cost structure is divided into distinct tiers and use cases, primarily categorized as Business-to-Consumer (B2C) and Business-to-Business (B2B). Understanding these distinctions is the first step in estimating your costs.

  • B2C (Business-to-Consumer): This model is for applications built for individual consumers. Think of social media apps, e-commerce stores, or media streaming services.
  • B2B (Business-to-Business): This model is for applications built for organizational use, where users are part of a team. Examples include project management tools, HR management software, or collaborative platforms. As a rule, B2B plans include additional features layered on top of the B2C offerings.

Auth0 offers a free plan and three primary paid tiers: Essentials, Professional, and Enterprise. Let’s break down what each tier includes and how costs scale.

The Auth0 Free Plan

Auth0 provides a generous free tier that is ideal for new projects, startups, or developers looking to experiment with the platform. As of September 24, 2024, Auth0 significantly upgraded its Free plan, making it even more powerful.

  • Cost: $0/month
  • Monthly Active Users (MAUs): Up to 25,000
  • Connections: Unlimited Social and Okta Connections
  • Custom Domain: 1
  • Tenants: Limited to 1 tenant

This upgraded plan is a fantastic starting point, allowing you to build and launch a full-featured application with robust authentication for a substantial number of users before needing to pay.

Auth0 Paid Plans

When your needs exceed the free tier or you require more advanced features, you will need to move to a paid plan. You can start on any plan and upgrade as your usage increases.

  • Essentials Plan: Starts at $35/month.
  • Professional Plan: Starts at $240/month.
  • Enterprise Plan: Custom pricing for large-scale, mission-critical applications requiring premium support and features.

The actual monthly cost of the Essentials and Professional plans is not fixed; it scales directly with the number of Monthly Active Users (MAUs).

B2C Pricing Breakdown

For applications serving individual consumers, the pricing scales as follows.

Monthly Active UsersEssentials Plan Cost/MonthProfessional Plan Cost/Month
500$35$240
1,000$70$240
2,500$175$545
5,000$350$1,000
7,500$525$1,200
10,000$700$1,600
20,000$1,400Contact for price
30,000+Contact for priceContact for price

B2B Pricing Breakdown

For applications serving teams and organizations, the pricing model is different, reflecting the need for more advanced features like enterprise federation.

Monthly Active UsersEssentials Plan Cost/MonthProfessional Plan Cost/Month
500$150$800
1,000$300$800
2,500$700$1,000
5,000$1,300$1,200
7,500$1,750$1,500
10,000Contact for price$1,800
20,000Contact for priceContact for price
30,000+Contact for priceContact for price

An interesting point to note in the B2B pricing table is that for 5,000 and 7,500 MAUs, the Professional plan is listed as less expensive than the Essentials plan. This highlights the importance of carefully evaluating the feature set and specific pricing for your user count on Auth0’s official pricing page, as there may be promotions or structural nuances that benefit you.

Potential Additional Costs: The Full Picture

The monthly subscription fee is just one part of the total cost of ownership. Several other factors can add to your monthly bill, and it’s crucial to budget for them.

  • Overage Charges: Auth0’s plans come with a specific MAU limit. If you exceed this limit, you won’t be locked out, but you will incur overage charges. These extra fees apply for users beyond your plan’s allocation. For example, a user on the Professional plan paying $240/month for 1,000 MAUs might face an additional charge of $50-$100 per month for an extra 500 active users. This shows that pricing can scale very quickly if your user growth is unpredictable.
  • Add-Ons and Customizations: Auth0 offers powerful add-ons and features that may come with their own price tag. Furthermore, certain plans, like the B2C and B2B Professional tiers, allow for adjustments based on your specific needs, such as increasing the number of machine-to-machine (M2M) tokens or, for B2B, the number of Enterprise Connections. These adjustments can modify your base subscription cost.
  • Custom Domain Fees: While the new free plan includes one custom domain, additional domains or more advanced configurations might incur fees on certain plans.
  • Auth0 Professional Services: If you require help with implementation, migration, or strategy directly from Auth0, their professional services team is available for an extra cost.

When you upgrade from the free plan to any paid tier, your account is moved to the “Auth0 Teams” configuration. This structure allows you to nest multiple tenants (e.g., for development, staging, and production environments) under a single subscription, providing better organization but also representing a structural shift to be aware of.

What Goes Into Integrating Auth0 Into an App?

Integrating an authentication platform like Auth0 is more involved than simply dropping in a code snippet. A proper integration requires careful planning, secure configuration, and a deep understanding of identity protocols like OAuth 2.0 and OpenID Connect. The process generally involves defining an identity strategy, setting up the Auth0 tenant, configuring applications and APIs, and implementing the login flows within your client applications.

While Auth0’s SDKs and documentation are extensive, the devil is often in the details, especially when integrating with mobile applications. Developers can run into non-obvious, platform-specific challenges that can derail a project timeline.

Mobile App Integration Challenges

Mobile platforms like iOS and Android have unique security models and user experience paradigms that can make authentication tricky. Here are some real-world integration challenges developers have faced with Auth0 on mobile:

  • Silent Authentication Failures on Android: A common and frustrating issue is the failure of silent authentication. A user who has logged in before should be able to open the app and be authenticated automatically without re-entering credentials. However, developers often find that the getAccessTokenSilently() function fails on Android, returning a “Failed Silent Auth” or “Login Required” error.
  • The Third-Party Cookie Problem: The root cause of this silent auth failure is often related to how modern mobile operating systems handle cookies. The Auth0 flow relies on a browser view to set a session cookie. On Android, the embedded browser plugin (Chrome Custom Tabs) often blocks third-party cookies by default as a privacy measure. This prevents the silent auth mechanism from finding the existing session, forcing the user to log in again.
  • API Authorization Issues: Another challenge arises when trying to use tokens obtained from a mobile app to authorize API calls on a backend. Developers have reported that tokens generated via the mobile flow can cause 401 Unauthorized errors when used with backend middleware like withApiAuthRequired, leading to a disconnect between the client and server security layers.

These issues are not bugs in Auth0 but rather complex interactions between identity protocols, browser security policies, and mobile operating system constraints. Solving them requires a level of expertise that goes beyond standard app development. It requires a deep understanding of the underlying authentication flows and the ability to implement secure workarounds that don’t compromise the user experience.

Cost to Hire Experts for Auth0 Setup, Integration, and Support

Given the potential complexities, many businesses choose to hire experts for their Auth0 integration. The cost of hiring a team is an investment in security, speed, and reliability. As noted, Auth0 itself offers professional services for an extra fee. Alternatively, partnering with a specialized development agency like MetaCTO provides access to a team with deep, practical experience in implementing these systems across a variety of applications.

The MetaCTO Advantage: Expert Auth0 Implementation

At MetaCTO, we are experts in mobile app development and integrating complex systems like Auth0. We don’t just follow the tutorials; we understand the “why” behind the “how.” Our team of specialists in application security and identity management ensures your Auth0 integration is not just functional but also robust, secure, and tailored to your specific needs.

Here is what our expert implementation process looks like:

  1. Strategy and Setup: We manage every aspect of the integration, starting with a comprehensive strategy. We help you choose the right plan, configure your tenant with security best practices, and set up applications and APIs correctly from day one.
  2. Secure and Seamless Integration: Our proven process ensures a smooth, secure, and effective integration. We leverage our deep insights to build user-friendly authentication solutions. We use secure SDK integration methods and provide advice on developing secure custom rules to extend Auth0’s functionality. A standard integration can typically be completed within 1-3 weeks.
  3. Navigating Mobile Complexity: We have direct experience with the mobile-specific challenges described earlier. Our experts know how to correctly configure mobile apps to handle issues like Android’s silent authentication failures, ensuring a seamless experience for your users while preventing unauthorized access and protecting user data. We can integrate Auth0 across your entire digital ecosystem—web, mobile, and backend—for a unified identity solution.
  4. Ongoing Support and Strategy: Our partnership doesn’t end at launch. We offer ongoing support, including maintenance, troubleshooting, and security audits, to keep your authentication system in top shape. As your business evolves, we provide strategic advice to help you evolve your identity management solution, ensuring it continues to meet your security and usability needs.

By hiring an experienced team, you are not just paying for a one-time setup. You are investing in a secure foundation for your application, mitigating the risk of security breaches, and saving your in-house development team weeks or even months of troubleshooting complex identity protocols.

Conclusion

Auth0 is an exceptionally powerful platform that can dramatically simplify identity management and enhance your application’s security. However, understanding its total cost requires looking beyond the sticker price. This includes analyzing the B2C and B2B pricing tiers, planning for scalable costs based on your Monthly Active Users, and accounting for potential additional fees from overages and add-ons.

Furthermore, the technical cost of integration cannot be overlooked. While Auth0 provides excellent tools, real-world implementation, especially on mobile platforms, presents unique challenges that demand specialized expertise to solve efficiently and securely. An improper integration can lead to poor user experiences, security vulnerabilities, and significant development delays.

This is where partnering with a team of experts provides immense value. We have the deep technical knowledge and practical experience to navigate the complexities of Auth0 integration, ensuring your application is built on a secure, scalable, and user-friendly foundation. We manage the entire lifecycle, from initial strategy and secure setup to ongoing maintenance and strategic guidance.

If you are considering Auth0 for your product and want to ensure it is implemented correctly, securely, and efficiently, we can help. Talk with an Auth0 expert at MetaCTO to get a clear roadmap for integrating robust authentication into your application.

Last updated: 30 June 2025

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