VWO tells you which variant won. WhyIQ tells you what to test, and why.
VWO runs A/B and multivariate tests on your live traffic and reports a statistical winner. But about 80% of tests fail to beat the control, usually because the hypothesis was a guess. WhyIQ runs 50 visitor archetypes against the page in about 2 minutes, with no traffic, and explains why each one leaves, so the test you run is the right one. They sit at different points in the same loop.
| VWO | WhyIQ | |
|---|---|---|
| Primary question answered | Which variant wins on live traffic? | Why does each archetype leave? |
| Visitor view | Aggregate test cohorts | Per-archetype (50 distinct profiles) |
| Works pre-launch | No, needs live traffic to test | Yes, any URL |
| Time to a result | Weeks per test for significance | About 2 minutes |
| Output shape | Statistical winner between variants | Prioritized failure-mode list with fixes |
| Generates the hypothesis | You bring it | Yes, the diagnosis is the hypothesis |
| Works on low-traffic pages | No, tests take months | Yes, regardless of traffic |
| AI search citability | Not measured | Scored on every scan |
| Tracking script on site | Required | None |
| Starting price | Free plan, paid scales by traffic | From $10 for 5 scans, credits never expire |
The part of CRO that happens before the test
VWO is excellent at confirming what wins on real traffic. WhyIQ adds the diagnosis that decides what is worth testing, and works on pages that could never run a meaningful experiment. Why low traffic breaks A/B testing.
The weak-hypothesis problem
Roughly 80% of A/B tests fail to beat the control, usually because the hypothesis was a guess. WhyIQ runs 50 archetypes against the page and hands you the diagnosis, so the variant you test in VWO is the one the evidence points to.
The pre-traffic gap
VWO cannot run a test until enough live traffic accumulates. WhyIQ diagnoses a brand-new page or a staging redesign in about 2 minutes, so launch decisions do not wait weeks for a test to conclude.
The aggregate-cohort blind spot
VWO measures lift across a whole test cohort. WhyIQ separates 50 archetypes so you can see which segment the current page loses and which one a variant should target, instead of optimizing for an averaged visitor who does not exist.
The low-traffic dead end
At 1,000 visitors a month a single test can take over a year to reach significance. WhyIQ needs no traffic at all, so low-traffic and pre-launch pages get a real diagnosis instead of an experiment that never concludes.
What WhyIQ does not replace
VWO confirms what actually wins on real visitors. WhyIQ diagnoses why and what to test. Both have value, neither replaces the other.
Live A/B and multivariate testing on real traffic
Statistical measurement of real conversion lift between variants
Server-side experimentation, feature flags, and staged rollouts
On-traffic personalization and audience targeting
The confirmed, real-traffic winner that only an experiment can establish
When each is the right call
Use WhyIQ when
- You need to decide what to test before spending the traffic
- A page or whole site is new and has no test-ready traffic
- An experiment lost and you need to understand why
- Traffic is too low for a test to ever reach significance
- Auditing a full funnel in one pass (up to 25 pages)
- You want a fix list and AI search citability on the same scan
Use VWO when
- You have enough live traffic to reach statistical significance
- You need to confirm real conversion lift between variants
- Multivariate testing across many elements is the goal
- Server-side experimentation and feature flags are in scope
- On-traffic personalization and targeting is the workflow
Test the right thing. Diagnose before you experiment.
Paste any URL and get 50 behavioral simulations, per-archetype confusion points, prioritized fix recommendations, and a shareable report. Free to try, no tracking script required.
No browser extension. No tracking code. No signup required to see results.