Lets Encrypt vs Firebase Authentication: Which Should You Choose in 2026?
Choosing between Lets Encrypt and Firebase Authentication 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.
By Toolradar Team · Last updated February 28, 2026 · Methodology
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 0.0/10)
- • You need something completely free
- • You need automation 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
Firebase Authentication
Backend authentication by Google
Best for you if:
- • You need low-code backend features specifically
- • Backend authentication service
- • Multiple sign-in methods
| At a Glance |  Lets Encrypt |  Firebase Authentication |
|---|---|---|
Price | Free | Free + Paid |
Best For | Automation | Low-Code Backend |
Rating | 95/100 | —/100 |
| Feature | Lets Encrypt | Firebase Authentication |
|---|---|---|
| Pricing Model | Free | Freemium |
| Editorial Score | 95 | — |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | AutomationIdentity & Access | Low-Code BackendIdentity & Access |
How Lets Encrypt and Firebase Authentication Compare
Lets Encrypt
Free automated SSL/TLS certificates
Free · 95/100 score
Firebase Authentication
Backend authentication by Google
Free tier available
Lets Encrypt is a automation tool. Firebase Authentication is in low-code backend.
Who Should Use What?
On a budget?
Lets Encrypt is free. Firebase Authentication is freemium.
Go with: Lets Encrypt
Want the highest-rated option?
Lets Encrypt scores 95/100. Firebase Authentication is unrated.
Go with: Lets Encrypt
Value user reviews?
Neither has user reviews yet.
Go with: Lets Encrypt
3 Questions to Help You Decide
What's your budget?
Lets Encrypt is free. Firebase Authentication is freemium. Go with Lets Encrypt if free matters most.
What's your use case?
Lets Encrypt is a automation tool. Firebase Authentication is in low-code backend. Pick the category that matches your needs.
How important are ratings?
Not all tools have been rated yet.
Key Takeaways
Lets Encrypt
- Higher score: 95/100 vs unrated
- Completely free
- Our pick for this comparison
Firebase Authentication
- Better fit for low-code backend
The Bottom Line
Lets Encrypt (95/100) is our pick.
Frequently Asked Questions
Is Lets Encrypt or Firebase Authentication better?
Lets Encrypt scores 95/100 in our evaluation. Lets Encrypt is free and Firebase Authentication is freemium.
What are Lets Encrypt and Firebase Authentication used for?
Lets Encrypt: Free automated SSL/TLS certificates. Firebase Authentication: Backend authentication by Google.
What does Lets Encrypt cost vs Firebase Authentication?
Lets Encrypt is completely free. Firebase Authentication is freemium (free tier + paid plans). Visit their websites for detailed pricing.