Reviewed by the Softwares.com Editorial Team · Last updated June 2026 · How we rate
Key facts
- Vendor
- Cisco
- Pricing
- Freemium — Free – $3/user/mo
- Free tier
- Yes
- Platforms
- Web, Ios, Android, Api
- Best for
- Smb, Enterprise, It Teams
- Editor rating
- 4.6 / 5
- Founded
- 2010
- Headquarters
- Ann Arbor, USA
What is Duo Security?
Duo Security is a authentication tool from Cisco. Cisco Duo delivers easy multi-factor authentication, device trust, and adaptive access policies to secure logins to any application.
Duo Security uses freemium pricing and offers a free tier you can start on without a credit card. Free – $3/user/mo.
It's best suited to smb, enterprise, it-teams and runs on Web, Ios, Android, Api.
Standout strengths include fast, painless mfa rollout, device trust and posture checks, free tier for up to 10 users. Worth weighing: advanced policies require higher tiers, admin reporting is basic.
Duo Security pricing
Pros
- Fast, painless MFA rollout
- Device trust and posture checks
- Free tier for up to 10 users
Cons
- Advanced policies require higher tiers
- Admin reporting is basic
Duo Security vs alternatives
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Frequently asked questions
What is Duo Security?
Cisco Duo delivers easy multi-factor authentication, device trust, and adaptive access policies to secure logins to any application.
How much does Duo Security cost?
Duo Security is freemium-priced. It has a free tier. Paid plans start at $3/user/mo.
Does Duo Security have a free trial?
Duo Security offers a free tier rather than a time-limited trial.
What platforms does Duo Security support?
Duo Security is available on Web, Ios, Android, Api.