InviziPoll vs 15Five
Competitor facts verified 2026-08-16
15Five is a performance and engagement platform built around manager workflows: check-ins, reviews, OKRs, and engagement surveys that segment by team and attribute. InviziPoll is narrower. It exists for the cases where respondents need a stronger guarantee than confidential reporting rules provide, because the platform itself can't read an individual answer.
Bottom lineChoose InviziPoll when unreadable individual responses are the requirement. Choose 15Five when you want engagement surveys sitting inside a performance-management platform, with published per-user pricing and a documented confidentiality threshold.
At a glance
- 15Five states plainly that its engagement surveys are confidential, not anonymous.
- Default confidentiality threshold is 5 respondents, and admins can lower it to 4 or 3 before launch.
- InviziPoll is stronger when unreadable individual answers are the requirement; 15Five is stronger when surveys need to sit beside reviews and OKRs.
Who it's for
Two products, two buyers
The overlap is real, but the default assumptions are different. Start here before scanning the feature table.
Best for
InviziPoll
HR, compliance, and leadership teams running ethics, speak-up, or high-sensitivity polls where respondents should be able to assume individual answers are unreadable to the platform operator.
Best for
15Five
People teams that want engagement surveys attached to performance management: check-ins, reviews, OKRs, manager action planning, and segmentation by team, tenure, or location.
Feature snapshot
Side-by-side, dimension by dimension
Summarized for buyers - not exhaustive specs. Validate contractual docs before procurement.
Individual responses are encrypted in the respondent browser before upload. Servers store ciphertext only, so individual answers aren't readable by InviziPoll.
15Five documents that engagement survey responses are associated with employee accounts inside the platform for grouping and segmentation.
Anonymity is the architecture rather than a setting, so there's no mode to misconfigure.
15Five is explicit in its own help center that confidential is not the same as anonymous, which is a more candid framing than much of this category uses.
Admin reporting is aggregate-oriented, unlocks at three or more responses, and doesn't expose per-response timelines.
15Five states that no one in the organization can see how a specific person responded to a survey statement, and that admins see group-level response rates during a live campaign rather than individual participation.
Admin results unlock at three or more responses, and demographic cohorts require five. These are product floors, not per-campaign settings.
The default confidentiality threshold is 5 respondents. Engagement Admins and Organization Admins can lower it to 4 or 3 before a campaign launches, and 15Five warns that doing so raises the risk of identifying respondents in small groups.
The unlock floors aren't operator-adjustable, so the guarantee a respondent was given can't be lowered after they answer.
15Five states the confidentiality threshold can't be changed for an active campaign and must be set before launch.
Verbatims appear only past the unlock threshold, and responses carry no timestamps that could order them against a roster.
Written feedback is treated as confidential and is subject to the same reporting threshold before it's displayed.
Published USD tiers on the pricing page, with a trial for new workspaces and Enterprise by quote.
15Five publishes per-user rates: Engage at 4 USD per user per month, Perform at 11 USD, and Total Platform at 16 USD, all billed annually, plus separately priced add-ons.
Sensitive workplace polling where participation depends on a technical anonymity boundary rather than a policy promise.
Engagement programs that need to live next to reviews, check-ins, and OKRs in one manager-facing system.
15Five capabilities vary by plan and configuration - confirm specifics against their current documentation.
Anonymity
Is 15Five anonymous?
No, and 15Five says so directly. Its help documentation states that confidential is not the same as anonymous, and explains that engagement survey responses are associated with employee accounts inside 15Five so results can be grouped and segmented. 15Five also states that no individual responses are identified and that nobody in the organization can see how a specific person answered a given statement. Those two facts sit together: identity exists in the system, and reporting rules are what keep it away from managers. The default confidentiality threshold is 5 respondents, and Engagement Admins or Organization Admins can lower it to 4 or 3. That's a documented, honest confidential model. It's a different guarantee from a system where the vendor stores ciphertext only and can't read an individual answer at all.
Choosing well
Which one should you pick?
If both tools could technically run your poll, let the default assumption decide.
Choose InviziPoll when
- Respondents need confidence that individual answers are unreadable to the platform operator.
- The topics are sensitive enough that an adjustable reporting threshold isn't reassurance.
- You can trade performance-management features for a stronger privacy guarantee.
Choose 15Five when
- You want engagement surveys in the same system as check-ins, reviews, and OKRs.
- Manager action planning tied to employee attributes is part of the value you're buying.
- Published per-user pricing and a documented confidentiality threshold are enough for the programme.
Pricing philosophy
How each vendor thinks about cost
InviziPoll
Published USD tiers on /pricing (Pro and Business), 14-day trial for new workspaces, Enterprise via sales quote.
15Five
Published per-user rates as of 2026-08-16: Engage 4 USD per user per month, Perform 11 USD, Total Platform 16 USD, all billed annually. Add-ons are priced separately, including compensation modules and manager coaching. Verify current rates and any seat minimums during procurement.
Keep comparing
Other head-to-heads
Common questions
- Is 15Five anonymous or confidential?
- Confidential. 15Five's own help documentation states that confidential is not the same as anonymous and explains that engagement survey responses are associated with employee accounts for grouping and segmentation. It also states that no individual responses are identified and nobody in the organization can see how a specific person answered. For the longer explainer see /blog/is-15five-anonymous and compare the stronger standard at /trust/anonymity.
- What's 15Five's minimum group size for survey results?
- The default confidentiality threshold is 5 respondents. Engagement Admins and Organization Admins can lower it to 4 or 3 in feature settings, and 15Five warns that lowering it increases the risk of respondents being identified in small groups. The threshold can't be changed once a campaign is active, so it must be set before launch.
- When is InviziPoll a better fit than 15Five?
- When the requirement is that individual responses are unreadable to the vendor and to admins, rather than hidden behind reporting rules that an administrator configures. That architectural model is summarized on /security. If your programme depends on reviews, check-ins, OKRs, or manager action planning, 15Five covers ground InviziPoll doesn't.
- Can a 15Five admin see who answered a survey?
- 15Five states that admins can view group-level response rates during an active campaign but not individual participation status, and that no one in the organization can see how a specific person responded. Identity still exists in the platform, which is what makes the model confidential rather than anonymous.
- What should buyers verify during vendor review?
- Ask what the confidentiality threshold is set to for each campaign, who holds Engagement Admin and Organization Admin roles, whether anyone can export response-level data, and how open-text comments are handled on small teams. Then decide whether a confidential model is sufficient for the topics you plan to ask about.
Test the anonymity model yourself
Spin up a workspace and run a confidential poll against your own threat model - ciphertext-only, no sales call required.