Originally published at devtoolpicks.com
Authentication is one of the first real decisions you make when building a SaaS product. Build it yourself and spend a week on something that should take an afternoon. Pick the wrong tool and pay for it later when pricing changes or your user count climbs past the free tier.
In 2026, three tools dominate this conversation for indie hackers: Clerk, Auth0, and Supabase Auth. Each solves the same problem (managing user signup, login, sessions, and identity) but they take different approaches and hit very different price points as your product grows.
The short answer: Supabase Auth if you are already using Supabase (it is essentially free). Clerk if you want the best developer experience and a genuinely generous free tier. Auth0 if you are already deep in the Okta ecosystem or have enterprise compliance requirements. But watch the pricing cliff carefully.
Quick Verdict
| Clerk | Auth0 | Supabase Auth | |
|---|---|---|---|
| Free tier | 50,000 MRU | 25,000 MAU | 50,000 MAU (with Supabase) |
| Paid entry | $20/month | $35/month | $25/month (full Supabase) |
| Pricing model | Per MRU over limit | Per MAU tiers | Included in Supabase plan |
| Dev experience | Excellent | Good | Good |
| Pre-built UI | Yes (polished) | Yes | Minimal |
| Laravel support | Via API | Via API | Native PostgreSQL |
| Self-hostable | No | No | Yes |
The Core Question: Standalone Auth or Bundled?
Before comparing features, understand the fundamental split here.
Clerk and Auth0 are standalone auth tools. You use them regardless of your database, hosting, or backend framework. They handle users, sessions, and identity while your app handles everything else.
Supabase Auth is bundled into the Supabase platform. If you are already using Supabase for your database (PostgreSQL), storage, and edge functions, auth is included in your plan at no additional cost. If you are not using Supabase, it is not a standalone option you would choose just for auth. You would be adopting the entire Supabase stack.
This distinction matters for your decision more than any feature comparison.
Clerk in 2026
Clerk is the newest of the three and has the best developer experience of any auth tool available right now. Pre-built React components, drop-in sign-in and user profile UIs, and SDKs for every major framework mean you can have auth working in an hour. The free tier is genuinely generous.
Pricing
| Plan | Cost | Monthly Retained Users | Key Limits |
|---|---|---|---|
| Hobby | Free | 50,000 per app | 3 dashboard seats, 7-day session limit |
| Pro | $20/month | 50,000 included, $0.02/MRU after | MFA, custom session lifetime, remove Clerk branding |
| Business | $250/month | Same as Pro | 10 dashboard seats, SOC2 report, priority support |
| Enterprise | Custom | Volume discounts | 99.99% SLA, HIPAA BAA, dedicated support |
Clerk updated its free tier in February 2026, raising the limit from 10,000 to 50,000 monthly retained users (MRU). That is a meaningful change. An indie hacker building a SaaS can realistically reach 50,000 users before ever paying Clerk a penny.
The Pro plan at $20/month adds MFA, custom session lifetimes, and removes Clerk branding from the sign-in UI. Once you exceed 50,000 MRU, additional users cost $0.02 each. So 60,000 MRU costs $20 base plus $200 in overages = $220/month. Plan your pricing model accordingly.
One useful nuance: Clerk counts "monthly retained users" not monthly active users. A user who signed up but never returned does not count. This makes the free tier stretch further than the number suggests for most early-stage products.
What Clerk Does Best
Pre-built components. The <SignIn />, <SignUp />, and <UserProfile /> components are genuinely polished. They handle email/password, social login (Google, GitHub, Apple), magic links, passkeys, and SMS OTP. You drop in the component, it works, and it matches your brand with minimal configuration. No other auth tool in this category ships ready-made UIs this well-designed.
Framework integrations. Clerk has official SDKs for Next.js, Remix, Astro, React, and more. The Next.js integration is particularly tight: middleware, server components, and client components all handled. If you are building with a modern JavaScript framework, Clerk is the easiest path to production.
The free tier is realistic for indie projects. 50,000 MRU with no credit card required means you can build, launch, and grow before touching your wallet.
What Clerk Gets Wrong
No self-hosting. Clerk is a cloud-only service. If your project has data residency requirements or you want to own the entire stack, Clerk is not an option. You are trusting their infrastructure.
Enterprise features are expensive. The Business plan at $250/month is a big jump from Pro. SAML enterprise connections on Pro cost $75/month each. If your first enterprise customer requires SSO, that is a $75/month line item on top of your $20 plan.
Laravel support exists via the API and some community packages, but there is no official Laravel SDK. For a Laravel SaaS, you are rolling your own integration or using a third-party package, which is more friction than the JavaScript framework experience.
Who should NOT use Clerk: Laravel developers who want a native SDK rather than API calls. Also: developers who need self-hosting or data residency compliance. And projects expecting rapid growth past 50K users where the $0.02/MRU overage cost becomes significant quickly.
Auth0 in 2026
Auth0 has been the dominant enterprise auth solution for years. It is owned by Okta, has the deepest feature set in this category, and is genuinely battle-tested at massive scale. It also has a pricing model that catches indie hackers off guard.
Pricing
| Plan | Cost | MAU Included | Key Features |
|---|---|---|---|
| Free | $0 | 25,000 | Passwordless, social login, basic security |
| Essentials | $35/month | 500 external MAU | Custom domains, RBAC, MFA, log streaming |
| Professional | $240/month | 1,000 external MAU | Existing user DB, enhanced security, M2M tokens |
| Enterprise | Custom | Custom | 99.99% SLA, private deployment, custom SSO tiers |
The free tier at 25,000 MAU is solid. The catch is what happens when you need features or hit the MAU limits.
The Essentials plan at $35/month includes only 500 external MAU. Every additional user costs roughly $0.07 each. So 5,000 MAU on Essentials does not cost $35. It costs approximately $350/month. This is the pricing cliff that catches people by surprise.
Auth0 also has a startup programme that gives new companies one year free on the B2B Professional tier with 100,000 MAU and 5 enterprise connections. If you qualify (pre-seed to seed, incorporated under a year), this is genuinely valuable.
What Auth0 Does Better
The feature depth. Auth0 has every authentication flow imaginable: SAML, OIDC, device flow, CIBA, passwordless, social login from dozens of providers, custom database connections, and more. If you can describe an authentication requirement, Auth0 almost certainly handles it.
Enterprise readiness. If you expect to sell to enterprise customers who mandate SAML SSO, security review questionnaires, and compliance certifications, Auth0's track record and documentation give procurement teams confidence. Many enterprise deals require it by name.
Actions and extensibility. Auth0's Actions allow you to run custom logic at every point in the authentication flow. Enriching tokens with database data, blocking logins based on business rules, custom MFA challenges: all possible without forking or self-hosting.
What Auth0 Gets Wrong
The pricing cliff is real and painful. Going from the free tier to Essentials is manageable. But the jump to Professional at $240/month when you need features like MFA or existing database connections is steep. And if you need more than 3 enterprise SSO connections on B2B Essentials or 5 on Professional, you are forced into a custom Enterprise negotiation regardless of your user count.
Complexity. Auth0 is built for enterprise teams. The dashboard is powerful but overwhelming for a solo developer who just wants login to work. There are concepts like tenants, applications, APIs, rules, and hooks that take time to understand. It is not a tool you pick up in an afternoon.
The pricing model punishes growth in ways that feel misaligned with a bootstrapped product. Your authentication costs can double with a successful marketing campaign, independent of revenue.
Who should NOT use Auth0: Indie hackers building consumer products where MAU will grow fast and revenue per user is low. The overage pricing can exceed your monthly revenue before you reach meaningful scale. Also: solo developers who want simplicity over feature breadth. Auth0's complexity is overkill for most indie projects. And anyone who cannot qualify for the startup programme but needs enterprise features.
Supabase Auth in 2026
Supabase Auth is not a standalone product. It is the authentication layer built into the Supabase platform, which also gives you a PostgreSQL database, storage, edge functions, and realtime subscriptions. If you are already using Supabase for your database (which many indie hackers are, given its generous free tier and strong developer experience), auth is included.
Pricing
Supabase Auth pricing is part of the broader Supabase plan:
| Plan | Cost | Auth MAU | Database |
|---|---|---|---|
| Free | $0 | 50,000 | 500MB |
| Pro | $25/month | 100,000 included | 8GB |
| Team | $599/month | Higher limits | 100GB |
| Enterprise | Custom | Custom | Custom |
There is no standalone auth pricing. If you are on Supabase Free, you get 50,000 auth MAU at no extra cost. If you are on Supabase Pro at $25/month, you get 100,000 auth MAU included in that price. Additional MAU on Pro cost $0.00325 each.
If you are not using Supabase, this tool is not for you. The auth layer is inseparable from the platform.
What Supabase Auth Does Well
Cost efficiency when bundled. For a solo developer already using Supabase's PostgreSQL database, auth is effectively free. You are paying $25/month for the database anyway, and auth comes with it. Compared to Clerk at $20/month or Auth0 at $35/month+ as separate lines, this compounds into meaningful savings.
PostgreSQL row level security integration. Supabase Auth integrates directly with PostgreSQL's RLS policies. You can write database security rules that reference the authenticated user ID, enforcing "users can only read their own data" directly at the database layer. This is a clean pattern that developers familiar with PostgreSQL will appreciate.
Open source and self-hostable. Supabase is open source. You can self-host the entire stack including auth on your own VPS. This gives you full control over data residency and removes vendor lock-in risk.
Social login, magic links, and phone auth work out of the box. The standard OAuth providers (Google, GitHub, Apple) are one-line configurations.
What Supabase Auth Gets Wrong
Minimal pre-built UI. Unlike Clerk, Supabase Auth does not ship a polished sign-in component you can drop into your app. There is a basic Auth UI library, but it is nowhere near as refined as Clerk's components. You will spend more time building the frontend auth experience.
Feature gaps vs dedicated tools. Supabase Auth handles the standard flows well but lacks some of the advanced features Auth0 offers out of the box: complex custom flows, Actions-style logic at auth events, and the breadth of enterprise integrations.
The 7-day project pause on the free tier applies to the whole platform, including auth. If you are building something casually that goes quiet for a week, your auth goes offline with the rest of the project.
Who should NOT use Supabase Auth: Developers not using Supabase for their database. It makes no sense to adopt the entire Supabase stack just for auth. Also: projects that need a polished pre-built auth UI out of the box. And teams that need enterprise auth features that Auth0 covers but Supabase Auth does not.
Head-to-Head for Indie Hackers
Developer Experience
Clerk wins clearly. The pre-built UI components are production-ready, the Next.js and React integrations are excellent, and the documentation is some of the best in the category. You can have auth working in under an hour without writing a single UI component.
Supabase Auth and Auth0 are roughly comparable on developer experience, with Supabase slightly ahead for developers already familiar with the platform and Auth0 slightly ahead on documentation depth and breadth.
Free Tier Value
Clerk and Supabase Auth are comparable at 50,000 users free. Auth0's 25,000 MAU free tier is half that.
The important caveat: Auth0's free tier is genuinely full-featured. Clerk's Hobby plan has some restrictions (7-day session lifetime, no MFA) that matter for certain products. Supabase Auth free has the 7-day inactivity pause problem for the whole platform.
Pricing at Scale
| Users | Clerk | Auth0 | Supabase Auth |
|---|---|---|---|
| 10,000 | Free | Free | Free (with Supabase) |
| 50,000 | Free | ~$175/month | Free (with Supabase) |
| 100,000 | $100/month (50K overage) | ~$525/month | $25/month (Pro) |
| 500,000 | $9,020/month | Very expensive | $1,300/month (auth MAU overages) |
Auth0 becomes dramatically more expensive than both alternatives at scale. Clerk and Supabase Auth are competitive with each other for most indie projects, with Supabase Auth winning on cost if you are already on the platform.
Laravel-Specific Considerations
None of the three have an official Laravel SDK, but all three work via API. The practical path for a Laravel SaaS:
Supabase Auth pairs most naturally with Laravel because you are connecting to a PostgreSQL database either way. The supabase-php community package handles auth and database access in one library.
Clerk works via API or community Laravel packages. The authentication logic lives in Clerk, and your Laravel app verifies JWT tokens issued by Clerk.
Auth0 has a well-documented Laravel integration guide and community packages. It is the most documented of the three for PHP.
Decision Framework
Building on Supabase already: Use Supabase Auth. It is included, it integrates with your database at the row level, and there is no reason to pay for a separate tool.
Building with Next.js or a modern JavaScript framework: Clerk. The pre-built components alone save you days of work, the free tier covers you until real traction, and the $20/month Pro plan is reasonable.
Expecting enterprise customers who require SAML SSO: Auth0. Apply for the startup programme if you qualify. The feature breadth and enterprise credibility are worth it if B2B is your model and you can qualify before the pricing gets painful.
Pure budget constraint, not on Supabase: Clerk's Hobby plan at zero cost for 50,000 users is the starting point. Reassess when you approach that limit.
FAQ
Can I switch auth providers later?
Yes, but it is painful. Migrating user accounts, password hashes, and session tokens between auth providers takes engineering time. The cleanest migration path is Clerk to Clerk (version upgrades) or exporting Auth0 users to a new provider. Plan your auth provider choice carefully because changing it after launch is a non-trivial project.
Does Clerk work with a Laravel backend?
Yes. Your Laravel backend verifies JWTs issued by Clerk using Clerk's public keys. Your frontend (whether Next.js, Vue, or a separate SPA) handles the Clerk sign-in components and passes tokens to your Laravel API. There is no official Laravel SDK but the API-level integration is straightforward.
Is Supabase Auth production-ready?
Yes, on the Pro plan. The free tier's 7-day inactivity pause is not suitable for production apps with real users. The $25/month Pro plan removes this and gives you 100,000 auth MAU, which is more than enough for a growing indie SaaS.
What is the difference between MAU and MRU in Clerk's pricing?
Auth0 uses Monthly Active Users (any user who authenticates at least once). Clerk uses Monthly Retained Users: a user who signs in at least one day after their first 24 hours. Users who sign up and never return do not count. In practice, Clerk's effective free tier is slightly more generous than the raw number suggests.
Does Auth0 have a startup programme?
Yes. Auth0 for Startups gives qualifying companies one year free on the B2B Professional plan with 100,000 MAU and 5 enterprise connections. Eligibility: pre-seed to seed stage, incorporated within the last year. If you qualify, apply before choosing a paid plan. It changes the economics significantly.
Final Verdict
For most indie hackers building a SaaS product in 2026, the decision comes down to your stack.
On Supabase: Use Supabase Auth. It is included in a platform you are already paying for, it integrates with your database at the deepest level, and it scales affordably.
On anything else: Start with Clerk. The developer experience is the best in the category, the free tier at 50,000 users is genuinely useful, and $20/month for Pro is a fair price for a production-ready auth system you did not have to build.
Auth0 earns its place for B2B SaaS founders expecting enterprise customers who mandate SAML SSO, who qualify for the startup programme, or who need a specific Auth0 feature not available elsewhere. For everyone else, the pricing complexity and cost cliff at scale make it a harder recommendation.
Also relevant: Supabase vs Firebase for Indie Hackers in 2026. The full database platform comparison for developers deciding between backends.
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