Rhombus Systems vs Duo Security: Which is Better in 2026?
Choosing between Rhombus Systems and Duo Security 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.
Bottom line: Duo Security is our overall pick for security workflows. Pick Rhombus Systems if you need its specific feature set.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Rhombus Systems
Cloud-managed physical security system with AI-powered insights and open integration capabilities.
Best for you if:
- • Integrated cloud-managed physical security platform with smart cameras, access control, and IoT sensors.
- • Leverages AI for real-time detections, automated workflows, and rapid search capabilities.
Duo Security
Multi-factor authentication for enterprises
Best for you if:
- • You want to try before committing
- • Duo Security is a multi-factor authentication platform for securing access to applications
- • It provides 2FA, device trust, and single sign-on with easy deployment across any app
| At a Glance |  Rhombus Systems |  Duo Security |
|---|---|---|
Starts at | $149/moProfessional License (per camera) | FreeFree tier available |
Best For | Security | Security |
Rating | 4.6/5 | 4.6/5 |
Choose Rhombus Systems or Duo Security?
Choose Rhombus Systems if
Cloud-managed physical security system with AI-powered insights and open integration capabilities.
- Comprehensive, integrated security solution covering cameras, access control, and sensors.
- Strong emphasis on cybersecurity and compliance.
- High degree of interoperability and an open API for custom integrations.
Choose Duo Security if
Multi-factor authentication for enterprises
- Enterprise MFA leader
- Good security
- Easy setup
| Feature | Rhombus Systems | Duo Security |
|---|---|---|
| Pricing Model | Paid | Freemium |
| User Rating | ★4.6/5 608 reviews | ★4.6/5 1,050 reviews |
| Categories | SecurityIoT Platforms | SecurityIdentity & Access |
In-Depth Analysis
Rhombus Systems
Cloud-managed physical security system with AI-powered insights and open integration capabilities.
Strengths
- +Comprehensive, integrated security solution covering cameras, access control, and sensors.
- +Strong emphasis on cybersecurity and compliance.
- +High degree of interoperability and an open API for custom integrations.
- +AI-powered analytics provide proactive threat detection and operational efficiency.
- +Scalable cloud-edge architecture supports large deployments and minimizes latency.
Weaknesses
- -Requires an ongoing license for all cameras to operate, in addition to hardware purchase.
- -Pricing structure involves hardware costs plus recurring license fees, which may be a significant upfront and ongoing investment.
- -Specific details on all 50+ integrations are not immediately available, requiring further inquiry.
Key features
Duo Security
Multi-factor authentication for enterprises
Strengths
- +Enterprise MFA leader
- +Good security
- +Easy setup
- +Many integrations
- +Cisco backing
Weaknesses
- -Expensive
- -Cisco pricing complexity
- -Per-user costs
- -UI dated
- -Better free alternatives
Key features
Pricing: Rhombus Systems vs Duo Security
| Plan | Rhombus Systems | Duo Security |
|---|---|---|
| Tier 1 | $149/year Professional License (per camera) | Free Free |
| Tier 2 | Contact us Enterprise License (per camera) | $3 /user/month Essentials |
| Tier 3 | $498 R120 Mini Dome 2MP (Hardware + Professional License for 1 year) | $6 /user/month Advantage |
| Tier 4 | $648 R200 Mini Dome 5MP (Hardware + Professional License for 1 year) | $9 /user/month Premier |
| Tier 5 | $1,048 R230 WiFi Dome 5MP (Hardware + Professional License for 1 year) | N/A |
| Tier 6 | $1,548 R410 Dome 8MP (Hardware + Professional License for 1 year) | N/A |
| Tier 7 | $1,648 R360S Fisheye 12MP (Hardware + Professional License for 1 year) | N/A |
| Tier 8 | $1,648 R540 Standard Zoom Bullet 8MP (Hardware + Professional License for 1 year) | N/A |
| Tier 9 | $1,648 R545 Telephoto Bullet 8MP (Hardware + Professional License for 1 year) | N/A |
| Tier 10 | $1,048 R520 Mini Bullet 5MP (Hardware + Professional License for 1 year) | N/A |
| Tier 11 | $3,698 R600 Multisensor 4 x 5MP (Hardware + Enterprise License for 1 year) | N/A |
| Tier 12 | $848 R150 Mini Split 4.2MP (Hardware + Professional License for 1 year) | N/A |
| Tier 13 | $1,999 Relay Core N100 (Hardware + License) | N/A |
Pricing verified from each vendor's public pricing page. Compare in detail on Rhombus Systems pricing and Duo Security pricing.
Who Should Use What?
On a budget?
Duo Security has a free tier. Rhombus Systems is paid only.
Go with: Duo Security
Want the highest-rated option?
Rhombus Systems: 4.6/5 (608 reviews). Duo Security: 4.6/5 (1,050 reviews).
Go with: Rhombus Systems
Value user reviews?
Rhombus Systems: 608 reviews (4.6/5). Duo Security: 1,050 reviews (4.6/5).
Go with: Duo Security
3 Questions to Help You Decide
What's your budget?
Rhombus Systems is paid. Duo Security is freemium. Duo Security lets you start free.
What's your use case?
Both are security tools. Compare their specific features to decide.
How important are ratings?
Both are rated 4.6/5.
Key Takeaways
Duo Security
- Larger review base (1,050 reviews)
- Free tier available
- Our pick for this comparison
Rhombus Systems
- Choose if you want cloud-managed physical security system with AI-powered insights and open integration capabilities
The Bottom Line
Duo Security is our pick.
Frequently Asked Questions
Is Rhombus Systems or Duo Security better?
Duo Security is rated in our evaluation. Rhombus Systems is paid and Duo Security is freemium.
What are Rhombus Systems and Duo Security used for?
Rhombus Systems: Cloud-managed physical security system with AI-powered insights and open integration capabilities.. Duo Security: Multi-factor authentication for enterprises.
What does Rhombus Systems cost vs Duo Security?
Rhombus Systems is a paid tool. Duo Security is freemium (free tier + paid plans). Visit their websites for detailed pricing.