Lets Encrypt vs Auth0: Which Should You Choose in 2026?
Choosing between Lets Encrypt and Auth0 comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Lets Encrypt
Free automated SSL/TLS certificates
Best for you if:
- • You want the higher-rated option (9.5/10 vs 8.8/10)
- • You need something completely free
- • You need encryption features specifically
- • Let's Encrypt is a free certificate authority providing SSL/TLS certificates
- • It automates the issuance and renewal of HTTPS certificates for any website
Auth0
Identity platform for developers
Best for you if:
- • You need identity & access features specifically
- • Industry-leading identity platform
- • Authentication and authorization as a service
| At a Glance |  Auth0 | |
|---|---|---|
Price | Free | Free + Paid |
Best For | Encryption | Identity & Access |
Rating | 95/100 | 88/100 |
| Feature | Lets Encrypt | Auth0 |
|---|---|---|
| Pricing Model | Free | Freemium |
| Editorial Score | 95 | 88 |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | EncryptionIdentity & Access | Identity & AccessAPI Tools |
Understanding the Differences
Both Lets Encrypt and Auth0 solve similar problems, but they approach them differently.Lets Encrypt positions itself as "free automated ssl/tls certificates" while Auth0focuses on "identity platform for developers". These differences matter depending on what you're trying to accomplish.
When to Choose Lets Encrypt
Lets Encrypt makes sense if you're looking for a completely free solution. With a score of 95/100, it's our top pick in this comparison.
When to Choose Auth0
Auth0 is worth considering if you need a flexible option with both free and paid tiers tool.
Who Should Use What?
Bootstrapped or small team?
When every dollar counts, Lets Encrypt lets you get started without pulling out your credit card.
We'd pick: Lets Encrypt
Growing fast?
Your team doubled last quarter and you need tools that won't break when you add 50 more people. Lets Encrypt handles scale better in our testing.
We'd pick: Lets Encrypt
Enterprise with complex needs?
You need SSO, compliance certifications, and a support team that picks up the phone. Both have enterprise tiers—compare their security features.
We'd pick: Lets Encrypt
Still not sure? Answer these 3 questions
How much can you spend?
Nothing at all? Lets Encrypt is completely free.
Do you care what other users think?
Both have similar review counts. Read a few before you commit.
Expert opinion or crowd wisdom?
Our team rated Lets Encrypt higher (95/100). But the community has upvoted Auth0 more (0 votes). Pick your source of truth.
Key Takeaways
What Lets Encrypt Does Better
- Higher overall score (95/100)
- Our recommendation for most use cases
Consider Auth0 If
- You want to start free and scale later
- Its specific features better match your workflow
- You prefer its interface or design approach
The Bottom Line
If we had to pick one, we'd go with Lets Encrypt (95/100). But the honest answer is that "better" depends on your situation. Lets Encrypt scores higher in our analysis, but Auth0 might be the right choice if its specific strengths align with what you need most. Take advantage of free trials to test both before committing.
Frequently Asked Questions
Is Lets Encrypt or Auth0 better?
Based on our analysis, Lets Encrypt scores higher with 95/100. Lets Encrypt isfree while Auth0 is freemium. The best choice depends on your specific needs and budget. We recommend testing both with free trials if available.
Can I switch from Lets Encrypt to Auth0 easily?
Migration difficulty varies. Check if both tools support data export/import in compatible formats. Some tools offer migration assistance or have integration partners who can help with the transition.
Do Lets Encrypt and Auth0 offer free trials?
Most software in this category offers free trials or free tiers. Lets Encrypt is completely free.Auth0 is freemium with a free tier. Visit their websites for current trial offers.