A/B testing

Promote winners. Kill losers. Repeat.

Test headlines, steps, and layouts with clean traffic splits. Promote the winner in one click, kill the loser, and keep iterating.

app.leadform.io/experiments

Solar Q2 — Headline test

30,815 visits · 3 variants

96% confidence
Variant A: Claim your 2026 grant44.8%
+56.4% lift
Variant B: Check eligibility31.2%
Control: Get a free quote28.6%
The testing suite

Everything you need to run trustworthy tests.

From A/A validation to one-click promotion, the whole experiment lifecycle lives in one place.

Variant A44.8%
Promote
Variant B31.2%
Pause

Promote winners. Kill losers.

Call a winner the moment it's statistically real, push it to 100% of traffic, and retire the rest. No code, no redeploy.

A/A validationTraffic clean
Split A22.4%
Split A22.1%

Validated with an A/A test first.

Before you trust a split, we prove the traffic is clean with an A/A test, so you never chase a lift that was never there.

Even, stable splits.

Traffic is divided evenly and held steady for the whole test.

Significance, calculated.

We compute confidence for you and flag the moment a result is real.

Test anything.

Headlines, steps, and layouts, including full multi-step flows.

Outcomes

Move the number that funds your spend.

Structured testing compounds. Here is what teams see once winners ship and losers don't.

Winning lift vs control

+56.4%

How far the latest winning variant beat the control.

Confidence before you ship

96%

Results are held until they're statistically real, so no false winners.

Lead-level attribution

100%

Every lead carries the variant that produced it, all the way to your CRM.

Attribution

Attribution down to the lead.

Every lead is tagged with the variant that produced it, so attribution follows them all the way into your CRM and revenue reporting.

  • Lead-level variant tagging
  • Attribution flows to your CRM
  • Know which variant booked the call
  • Optimise for revenue, not clicks
app.leadform.io/marketing

Contacts

66,800+
JCJames CarterSolar · qualified
MPMia PatelASHP · new
TOTom OkaforSolar · booked

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Start testing what actually converts.

Launch your first headline test today and let the data pick the winner.