Skip to main content

The A/B Test Library

Real experiments. Real outcomes. Actionable patterns. Browse A/B tests with problem-to-solution framing, results, and recommendations for what to test next.

599 experiments
Winners, losers & inconclusive
Full statistical details
inconclusive

Shopping cart: What It's Worth

Context: How prices are displayed on the shopping cart directly influences perceived value and willingness to buy.

PricingCross-Industry
inconclusive

Product: Single Or Alternative Buttons

Context: The primary call-to-action on the product isn't converting at its potential — design, copy, or placement may be the bottleneck.

CTACross-Industry
inconclusive

Home landing: Empowering Headline

Context: The headline on the home landing may not resonate with what users actually care about or address their top objections.

Copy & MessagingCross-Industry
inconclusive

Product: Visible Availability

Context: Multi-step processes on the product can overwhelm users if they can't see how far along they are or how much is left.

LayoutCross-Industry
inconclusive

Checkout: Fewer Form Fields

Context: Each additional form field adds friction to the checkout, increasing the chance users abandon before completing their submission.

FormCross-Industry
winner

Restructuring Homepage Hierarchy to Surface Personalized Offers

The story behind this win is the iteration discipline. The first attempt at this homepage redesign changed two systems at once (messaging + routing) and produced an ambiguous result: the entry metric moved slightly positive while downstream metrics moved meaningfully negative. The team correctly identified that the routing change — which inadvertently replaced direct links to a personalized plan-search experience with modal-driven entry into a generic flow — was the downstream killer. The iteration restored the original routing and kept ONLY the homepage hierarchy changes. All funnel metrics moved directionally positive in lockstep (entry +2.38%, mid-funnel +7%, conversion +11.81%) — none stat-sig individually but consistent enough across the funnel to justify shipping. Element-level diagnostics confirmed the mechanism: the segment CTAs the team intended to promote saw a 26-30% lift in unique-visitor interaction, while the unchanged hero banner stayed flat (as expected). Two key behavioral observations: (1) page-length reduction surfaced a 4x lift on a previously buried bottom-of-page zip code input — proving the secondary lesson that 'less page' can mean 'more conversion real estate'; (2) desktop strongly outperformed mobile, with the suspected cause being mobile's lead-with-form pattern (zip code above hero) — putting the form before the message creates friction. The broader transferable insight: when a messy test confounds multiple variables, the right move is to isolate one variable in the next test, not to abandon the hypothesis.

LayoutEnergy & Utilities
winner+8.3%

Checkout: Remove Coupon Fields

Problem: Coupon and promo code fields on checkouts can distract users — they leave to hunt for codes, reducing completion rates.

FormCross-Industry
winner

Does Pinning a Mobile Checkout CTA Improve Conversion?

Sticky mobile CTAs can compress time-on-page meaningfully (~15% faster) without sacrificing engagement signals — users converted at a directionally higher rate AND moved through the page faster, suggesting reduced hesitation rather than rushed clicks. The result was shipped via 90/10 holdout monitoring rather than traditional 50/50 A/B inference — the high baseline (~85%) and limited mobile traffic made full A/B underpowered, so the team chose a holdout-validated rollout as the deliberate methodology. Bayesian P(variant > control) was ~0.90, supporting the directional ship call. Worth noting: external research flags sticky CTAs as context-dependent — they help when the primary action is buried below the fold, but can hurt on shorter pages where the original CTA is already visible.

CTAEnergy & Utilities
inconclusive-4.7%

Listing: Filled Or Ghost Buttons

Context: The primary call-to-action on the listing isn't converting at its potential — design, copy, or placement may be the bottleneck.

CTACross-Industry
inconclusive

Product: More Or Fewer Plans on Product Page

Context: How prices are displayed on the product directly influences perceived value and willingness to buy.

PricingCross-Industry
inconclusive

Checkout: Customer Star Ratings

Context: Users on the checkout need validation from others before committing — without visible proof of success, they hesitate.

Social ProofCross-Industry
inconclusive

Checkout: Top Aligned Labels

Context: Friction during the checkout process causes users to abandon right when they're closest to converting.

FormCross-Industry
inconclusive

Product: Welcome Mat - Partial

Context: Capturing visitor attention on the product with modals or overlays is a balance between engagement and annoyance.

LayoutCross-Industry
inconclusive

Home landing: Natural Language Forms

Context: Multi-step processes on the home landing can overwhelm users if they can't see how far along they are or how much is left.

FormCross-Industry
inconclusive

Listing: Visible Payment Options

Context: The primary call-to-action on the listing isn't converting at its potential — design, copy, or placement may be the bottleneck.

CTACross-Industry
winner+5.0%

Listing: Multiple Steps

Problem: Multi-step processes on the listing can overwhelm users if they can't see how far along they are or how much is left.

NavigationCross-Industry
inconclusive

Listing: List Or Grid View

Context: The information hierarchy on the listing may not match how users actually scan and process the content.

LayoutCross-Industry
inconclusive

Product: Postponed Modal Forms

Context: Capturing visitor attention on the product with modals or overlays is a balance between engagement and annoyance.

FormCross-Industry
winner+8.5%

Pricing Page: More Or Fewer Plans

Problem: How prices are displayed on the pricing page directly influences perceived value and willingness to buy.

PricingFintech
inconclusive

General: Benefit-Lead Labels

Context: Form input design on the general affects completion rates — label placement, validation timing, and field clarity all matter.

FormCross-Industry

Stop Re-Running Failed Tests

Build on what's already been learned. Save your own experiments, surface winning patterns, and make every test count.

Browse Experiments By

Comparisons

Popular Combos

Explore More