Your next A/B test, already validated by someone with a bigger budget.
We re-crawl 1000+ B2B and ecommerce brands with isolated browser sessions, catch the pages where variants diverge, and tell you what changed and why. Point it at your own site and get a ranked test backlog built from what actually shipped elsewhere.
Free forever for 10 watched companies. No card required. · Latest detection: Aug 5
Hottest tests
Live experiments across the pool
Annual toggle now defaults on, monthly price hidden until clicked.
New three-line headline replaces the ‘Built for speed’ opener with task imagery.
Primary button copy A/B: ‘Start building’ vs ‘Try Webflow free’.
1,000+ brands monitored on a rolling schedule
We re-crawl the highest-converting pages of curated companies with isolated browser sessions — fresh viewport, geo and fingerprint per visit — and diff every page against its last snapshot.
Detect real experiments
Vendor SDK fingerprints (Optimizely, VWO, Statsig, …), same-run variance, and week-over-week diffs flag actual tests, not template noise.
AI reads the test for you
A vision pass over both variants gives you the hypothesis, the surface (hero, pricing, CTA, form…), and the takeaway in plain English.
Why ABWatcher
The bigger team already ran your experiment. You just never saw it.
Well-funded teams ship dozens of tests a quarter. Most of the winning patterns never leave their own product — until now.
Without ABWatcher
- You guess what to test next, then defend the call in a roadmap meeting.
- You screenshot competitors and lose the context two weeks later.
- You read CRO blog posts citing tests from 2019.
- Half your experiments stay flat. You can't tell if the idea or the variant was wrong.
- The teams with bigger budgets keep pulling ahead.
A research team that runs while you sleep
- A running feed of live experiments from teams with serious testing budgets.
- Each test gets a plain-English hypothesis, surface, and takeaway.
- CRO gems hand-pick the patterns you'd never see in a blog post.
- Add your own site: get ranked A/B test plans grounded in real data.
- Spend your sprint shipping the bet most likely to win.
The product
Three jobs, one workspace
Watch live A/B tests across 1,000+ websites
We re-crawl curated brands on a rolling schedule with isolated browser fingerprints, planted vendor SDK cookies, and rotating viewports. When a hero, pricing, CTA, or form diverges across visits or against the previous snapshot, we capture both variants and analyse them.
- Vendor SDK fingerprints (Optimizely, VWO, AB Tasty, Statsig, more)
- Same-run variance + week-over-week diff detection
- Side-by-side viewer with surface, hypothesis, and takeaway
Analysis
Hero CTA copy changed from “Get started” to “Try free for 14 days”. Variant adds a benefit subline.
Rare, hand-curated conversion patterns
Not every insight comes from a live A/B test. Some patterns only show up when you stare at a thousand landing pages. Our analyser surfaces gems: unusual pricing layouts, social-proof tricks, onboarding nudges, the kind of thing nobody writes a blog post about.
- Standalone analysis per page, no variant required
- Tagged by surface so you can browse by hero, pricing, form…
- Filter by industry, business model, segment, region
Customer logos animate in only after the hero is read, not on first paint.
Quote uses real customer logos as currency markers next to volume tiers.
First-record CTA fires a Loom of the founder explaining the next step.
Generate A/B test plans for your own site
Add your URL. We crawl it, pull the most relevant historical detections from our database, and feed both to our analyser. You get a ranked list of A/B tests to run, each with a hypothesis, the surface it targets, and the precedent that inspired it.
- Grounded in real experiments from the curated pool
- Ranked by predicted impact, not vibe
- Re-run any time, includes pages and the freshest detections
Default the annual toggle on; reveal monthly only after click.
Replace headline with a 6-word outcome (not feature) line.
Move customer logos above the fold, but only after hero is read.
How it works
From crawl to insight
Four steps run in the background. You just open the dashboard.
- 01
Discover
We read each brand's sitemap and pick the highest-experiment-likelihood pages.
- 02
Crawl
Up to 5 isolated visits per page across US fingerprints to catch variant divergence.
- 03
Detect
Vendor SDK probes, same-run variance, and week-over-week diff trigger an analysis pass.
- 04
Explain
The surface, the hypothesis, and the takeaway, returned in seconds.
Pricing
Start free, scale when you find your edge
Every plan ships with the full curated pool. Higher tiers unlock visibility, your own tracked sites, and idea generation.
Free
- 1 seat included
- 10 watchable companies
- Feed on a 30-day delay
- No owned-site tracking
- 1 free test plan / month
Basic
- 5 seats included
- 250 watchable companies
- Live feed, no delay
- 5 owned sites · 50 pages each
- 50 idea generations / month
Pro
- 10 seats included, $15 / extra seat
- 1,000+ watchable companies
- Live feed, no delay
- 20 owned sites · 50 pages each
- 100 idea generations / month
Want the full plan comparison? See detailed pricing →
Recent detections
All posts →Aug 6, 2026
Urgency and Scarcity in CRO: A Beginner's Framework That Actually Works
A practical, psychology-backed guide to using urgency and scarcity in CRO — with real live A/B tests we caught in the wild, and how to do it without torching trust.
Aug 6, 2026
Adobe Sign Is Testing a 4th, Cheaper Pricing Tier. Here's Why That's Risky
Adobe caught testing a fourth "Express" plan on its Acrobat Sign pricing page, using its own Adobe Target to A/B a decoy tier. Here's what it means for your pricing table.
Aug 5, 2026
The CRO Metrics Stack: Beyond Conversion Rate to Actionable Insights
Conversion rate tells you what happened, not why. Here's the full metrics stack — engagement signals, micro-funnels, and diagnostics — that tells growth teams what to test next.
From the glossary
All terms →- Experiment Prioritization FrameworkA structured method (like PIE or ICE) for scoring and ranking test ideas so teams run the highest-value experiments first.
- Above-the-Fold Fold DetectionN/A
- Placebo TestA validation check that runs a fake or null intervention to confirm an experimentation system doesn't produce false positives.
- Above vs Below Median SplitA segmentation technique that divides users into two groups at the median of a metric to compare high and low engagers.
- Qualitative Feedback LoopA recurring process of collecting and acting on user comments, session recordings, and survey responses to inform test hypotheses.
- Experiment MetadataThe structured record of who, what, when, and how for a test — hypothesis, owner, dates, variants, and metrics used to track and audit it.
Find out what your competitors are testing.
One account. Ten watched companies. No card. Upgrade only when you want the full pool and idea generation on your own pages.