The standard way to implement Auth0 is using “Universal Login,” an Auth0-hosted modal that offers various login methods out-of-the box with some customization available. Because Universal Login is Auth0-hosted, it requires redirecting users away from your page/app, authenticating them on Auth0 or a custom domain, then returning them to your page/app which hurts conversion.

The easiest way to implement Stytch is using a frontend SDK (JavaScript, React Native, iOS) and either using a pre-built UI flow or custom-building your own with headless SDK methods. Unlike Auth0’s Universal Login, there is no redirect involved, and since you fully own the login page, there is a broader range of customization available. Fully owning the UI/UX is also possible using Stytch’s API directly.

Auth0’s Universal Login may work well for those looking for a login page with basic customization options, and the ability to do so with little to no code. Some additional (though limited) custom logic can be implemented via Auth0’s “Rules.” Because Universal Login is Auth0-hosted, you have limited control over the performance, look-and-feel, and potential (breaking) changes to the login experience.

Stytch’s approach may be a better fit for those seeking more flexibility and full control, both over the look-and-feel of the UI/UX and any nuanced authentication logic you’re looking to layer on, enabling tighter integration with your stack. The lack of a redirect also typically offers a more seamless, higher-converting user experience (Lighthouse improved conversion by 60% after switching to Stytch). Because you own the login page, a low- or no-code implementation like Universal Login isn’t available.

Auth0’s and Stytch’s product offerings differ in a few notable ways:

Auth0 supports some features not currently covered by Stytch, such as machine-to-machine authentication, a marketplace of third-party integrations, and the ability to integrate generic OIDC-compliant OAuth providers. Stytch supports certain features Auth0 doesn’t, such as advanced fraud prevention tools for fine-grained traffic shaping and bot mitigation, and a more comprehensive approach to B2B multi-tenancy controls.

Auth0 offers many different integration methods, whether it’s “New Universal Login” vs. “Classic Universal Login,” or “Centralized Universal Login” vs. “Embedded Login,” and not all login methods are equally supported. In contrast, Stytch’s API-first approach may be more straightforward to navigate for many developers via either Stytch's flexible frontend SDKs or core API.

Stytch offers more consumer-centric features not offered by Auth0, such as support for Google One-Tap, Whatsapp OTP, built-in provider failover for SMS/email verification, and Snapchat and TikTok OAuth.

Rather than merely adding to the core B2C authentication platform, Stytch has built B2B authentication from the ground up with a more comprehensive multi-tenant approach, making the solution highly configurable and scalable from small developer teams to large enterprises. Stytch's B2B solutions can help you scale from seed to IPO as your customers’ authentication needs grow in complexity.

Stytch’s fraud solutions like Device Fingerprinting leverage a broader set of nuanced parameters that allow you to build more fine-grained logic around how to treat traffic by risk level. Moreover, Stytch's anti-bot and fraud prevention capabilities are embedded natively on Stytch's platform, reducing the need to rely on additional security vendors. In contrast, Auth0’s approach to fraud is more binary and inflexible, which may be insufficient for today’s complex fraud environment. Because Auth0's fraud tools are not hardened against obfuscation and more sophisticated attackers, many Auth0 customers may also need a separate security vendor to mitigate bots and other threat vectors.