ARK2FA vs Duo Mobile
ARK2FA
wproit.com
Duo Mobile
duo.comSide by side
| Figure | ARK2FA | Duo Mobile |
|---|---|---|
| Price from | — | $3/mo |
| Free plan | — | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | — |
| Windows | Yes | — |
| Linux | Yes | — |
| iOS | — | Yes |
| Android | — | Yes |
| Self-hosted | Yes | — |
| Plans published | 2 | 5 |
| Spec score · Multi-Factor Authentication Software | 7.7 (#28) | 9.0 (#1) |
| Compliance | The technical specifications list ISO 27001, GDPR, HIPAA, and PCI DSS. | Duo states that it supports or aligns with PCI-DSS 4.0, NIST 800-63 and 800-171, DEA EPCS, GDPR, FFIEC, HIPAA, and PIPEDA requirements. |
| Founded | 2022 | 2010 |
| Headquarters | Sofia, Bulgaria | Ann Arbor, Michigan, United States |
| Integrations | Listed integrations include ADFS, RADIUS, Cisco AnyConnect VPN, FortiClient VPN, Pulse Secure VPN, Aruba Wi-Fi, Cisco Wi-Fi, Google Authenticator, Microsoft Authenticator, and LDAP. | Duo works with legacy infrastructure, major platforms, custom apps, VPNs, SaaS tools, and offline devices. |
Plans
Duo Mobile
- Duo FreeFree
- Duo Essentials$3 a month
- Duo Advantage$6 a month
- Duo Premier$9 a month
- Duo FreePrice not published
In their own words
Duo Mobile
Duo Mobile provides two-factor and multi-factor authentication for company and personal data on iOS and Android phones and tablets. Users can approve or deny sign-ins with Duo Push, or enter time-based passcodes generated by the app. It also supports third-party TOTP accounts, biometrics, and passcodes. Duo Restore backs up and restores Duo-protected accounts when a user changes devices, and Security Checkup provides a mobile-device security score through app notifications. For organizations, Duo connects with legacy infrastructure, custom apps, VPNs, SaaS tools, and offline devices. Integration methods include RADIUS, SAML/OIDC, Duo Authentication Proxy, and direct API connections. Adaptive policies can consider user role, location, application, network, and device health. Duo says it keeps private keys on users’ devices in a tamper-proof secure element and does not store passwords. The free plan covers 10 users; paid plans start at $3.00 per month, and a 30-day trial is listed. End users needing enrollment or troubleshooting help are directed to their organization’s Duo administrator.