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Duo is listed with a free plan and a starting price of $3, plus support for phishing-resistant MFA, SSO and directory needs. The catch: annual costs and relevant user feedback are unclear. The alternatives below range from workforce identity tools to access-governance platforms, so they are not all one-for-one replacements. Match the product to your priority, then confirm plan limits and total costs before switching.
01Why people leave Duo
Annual cost is hard to compare
Duo has a free plan and a $3 starting price, but annual costs are unclear in the published information.
You need a different IAM emphasis
The alternatives cover workforce SSO, app identity and access governance; choose based on the job you need the replacement to do.
Relevant buyer feedback is missing
The Reddit threads we read discuss an iPhone product called Duo, not business MFA or IAM, so they do not establish reasons to leave this Duo.
02The alternatives, ranked by fit
- Broad identity
OktaOktaOkta is a sensible shortlist option if your switch is about more than MFA: it is positioned for broad identity integrations and workforce and customer access. Its stated starting price is $6. That makes it worth comparing with Duo if your organization already uses Okta workflows or needs identity coverage beyond the use cases listed for Duo.
Trade-off: Higher-tier costs and migration effort need checking.
7.0/10from
$6/mo - Small-team SSO
OneLoginOneLoginOneLogin is listed from $3 and is aimed at small teams needing workforce SSO, app provisioning and hybrid identity. Its entry price matches Duo's listed starting price, making it a relevant option when SSO and provisioning are the main switching criteria. The published information does not establish that it replaces every Duo MFA use case.
Trade-off: Basic is capped, and several costs are unpublished.
7.0/10from
$3/mo - App identity
Auth0Auth0Auth0 is a better fit to assess when the identity problem sits inside an app: it is listed for enterprise SSO and SCIM, user and machine identity, and granular access controls. The pricing summary shows a $35 starting price and a free plan. Compare its MAU caps and total cost against your expected usage before moving.
Trade-off: Check MAU caps and total cost.
6.3/10from
$35/mofree plan - Access governance
LumosLumosLumos suits teams whose reason for leaving is access oversight rather than a narrower MFA requirement. It is listed for employee and machine access, AI agent access, and automated access reviews. That is a different emphasis from Duo's stated MFA, SSO and directory use cases, so assess it as a governance-led alternative.
Trade-off: Pricing is opaque before a sales call.
6.5/10from
Custom - Approval workflows
OpalOpalOpal is worth considering if access approvals and reviews are central to the switch. Its listed coverage includes multiple identity types and time-limited privileged access. The pricing summary shows a $39 starting price and a free plan, but this is a governance-oriented option, not a confirmed like-for-like MFA replacement.
Trade-off: Seat minimums apply; public pricing is incomplete.
6.0/10from
$39/mofree plan - Enterprise governance
SailPointSailPointSailPoint is positioned for enterprises governing many identity types and teams that can handle custom implementation. If Duo is no longer enough for your organization's governance needs, compare SailPoint's broader governance focus with the narrower MFA, SSO and directory needs in Duo's profile. The published pricing information does not list a starting price.
Trade-off: Pricing is opaque; users report clunky, complex workflows.
6.2/10from
Custom
03Side by side
| Tool | Score | From | Free plan | Best for |
|---|---|---|---|---|
 Duo Duo (current) | 7.5 | $3/mo | Yes | Teams prioritizing phishing-resistant MFA |
| Okta Okta | 7.0 | $6/mo | No | Teams needing broad identity integrations |
| OneLogin OneLogin | 7.0 | $3/mo | No | Small teams needing workforce SSO |
| Auth0 Auth0 | 6.3 | $35/mo | Yes | Teams needing enterprise SSO and SCIM |
| Lumos Lumos | 6.5 | Custom | No | Teams governing employee and machine access |
| Opal Opal | 6.0 | $39/mo | Yes | Teams governing access across many identity types |
| SailPoint SailPoint | 6.2 | Custom | No | Enterprises governing many identity types |
Questions people ask
What are some alternatives to Duo Mobile?
The alternatives covered here are IAM products, including Okta, OneLogin and Auth0. The published information does not confirm that any is a one-for-one Duo Mobile authenticator replacement or specify their mobile MFA features. Check each product's MFA support and plan limits before switching.
Is there a free version of Duo?
The published Duo profile lists a free plan and a starting price of $3. It does not publish the free plan's limits, eligible features or annual costs. Confirm those details with the pricing page before treating the free tier as a fit for your team.
Are these alternatives for Google Duo or Duolingo?
This page uses the Duo profile described for MFA, SSO and directory needs. The listed alternatives were selected for IAM and identity use cases, not for other products that may share the name Duo. If you mean a different product, these picks may not fit.