Avast vs Certbot: Which is Better in 2026?
Choosing between Avast and Certbot 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:
Avast
Free antivirus, scam blocking, privacy, and cleanup in one app
Best for you if:
- • Avast One Free is $0. Premium Security is the first paid antivirus step.
- • US Premium Security: $49.08 year 1 then $77.99/year (1 PC + 1 mobile). 10 devices: $69.48 then $99.99/year.
Certbot
Automated Let's Encrypt certificate management
Best for you if:
- • You need something completely free
- • Certbot is a free tool for automatically obtaining and renewing Let's Encrypt certificates
- • It configures HTTPS on web servers with a single command
| At a Glance |  Avast |  Certbot |
|---|---|---|
Starts at | FreeFree tier available | FreeFree tier available |
Best For | Security | Security |
Rating | 4.3/5 | - |
Free plan | Yes | Yes |
Choose Avast or Certbot?
Choose Avast if
Free antivirus, scam blocking, privacy, and cleanup in one app
- A real free Avast One / Free Antivirus app, not a 7-day teaser only
- Published US dollar prices on official Premium Security and Ultimate pages
- 1+1: one desktop Premium seat includes one mobile
Choose Certbot if
Automated Let's Encrypt certificate management
- Free SSL certificates
- Let's Encrypt official
- Auto-renewal
- You want a fully free tool (Avast requires payment)
| Feature | Avast | Certbot |
|---|---|---|
| Pricing Model | Freemium | Free |
| User Rating | ★4.3/5 176 reviews | No ratings yet |
| Categories | SecurityVPN | SecurityAutomation |
In-Depth Analysis
Avast
Free antivirus, scam blocking, privacy, and cleanup in one app
Stay on Avast One Free if you only want a scanner.
Watch out
Renewal is higher than year 1.
Strengths
- +A real free Avast One / Free Antivirus app, not a 7-day teaser only
- +Published US dollar prices on official Premium Security and Ultimate pages
- +1+1: one desktop Premium seat includes one mobile
- +30-day Windows trial with no card
Weaknesses
- -Renewal is higher than the first-year sale ($77.99 vs $49.08 on the small Premium pack)
- -In-app upsells on the free app
- -Owned by Gen Digital. Past privacy controversies are part of the brand history
- -Android / iOS-only Premium is sold inside the mobile app, not as a desktop SKU
Key features
Certbot
Automated Let's Encrypt certificate management
Certbot's pricing is exceptionally fair and generous, as it is entirely free.
Watch out
Requires server access/configuration knowledge
Strengths
- +Free SSL certificates
- +Let's Encrypt official
- +Auto-renewal
- +Many plugins
- +Well documented
Weaknesses
- -Command line focused
- -Server access needed
- -90-day certs
- -Plugin quality varies
- -Troubleshooting complex
Key features
Pricing: Avast vs Certbot
| Plan | Avast | Certbot |
|---|---|---|
| Tier 1 | Free Avast One Free | Free Free |
| Tier 2 | $77.99 year Premium Security (1 PC + 1 mobile) | N/A |
| Tier 3 | $99.99 year Premium Security (10 devices) | N/A |
| Tier 4 | $109.99 year Ultimate (small pack) | N/A |
| Tier 5 | $139.99 year Ultimate (larger pack) | N/A |
Pricing verified from each vendor's public pricing page. Compare in detail on Avast pricing and Certbot pricing.
Who Should Use What?
On a budget?
Certbot is free. Avast is freemium.
Go with: Certbot
Want the highest-rated option?
Avast is rated 4.3/5. Certbot has no ratings yet.
Go with: Avast
Value user reviews?
Avast: 176 reviews (4.3/5). Certbot: no ratings yet.
Go with: Avast
3 Questions to Help You Decide
What's your budget?
Avast is freemium. Certbot is free. Go with Certbot if free matters most.
What's your use case?
Both are security tools. Compare their specific features to decide.
How important are ratings?
Avast is rated 4.3/5; Certbot has no ratings yet.
Key Takeaways
Certbot
- Completely free
- Our pick for this comparison
Avast
- Choose if you want free antivirus, scam blocking, privacy, and cleanup in one app
The Bottom Line
Certbot is our pick.
Frequently Asked Questions
Is Avast or Certbot better?
Certbot is rated in our evaluation. Avast is freemium and Certbot is free.
What are Avast and Certbot used for?
Avast: Free antivirus, scam blocking, privacy, and cleanup in one app. Certbot: Automated Let's Encrypt certificate management.
What does Avast cost vs Certbot?
Avast is freemium (free tier + paid plans). Certbot is completely free. Visit their websites for detailed pricing.