Revenue-first A/B testing

Ship the version that makes more money

Otter is A/B testing software that measures revenue per variant, not just clicks. Run a split test and see conversion rate, average order value, and revenue per visitor side by side — so the change you ship is the one that actually grew the number your business runs on.

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www.otterab.com/dashboard
OtterVariantVisitorsConv. RateStatusControl12,4833.2%BaselineVariant A12,2914.7%WinnerScore97.3%Uplift+47%Total Visitors24.7kConversion trend

Tracks revenue on the platforms teams already sell through

Custom JavaScriptShopifyWordPressWebflowWixWooCommerceClickFunnelsSquarespaceFramerNext.jsGoogle Tag ManagerCustom JavaScriptShopifyWordPressWebflowWixWooCommerceClickFunnelsSquarespaceFramerNext.jsGoogle Tag Manager

The blind spot

Your best-converting variant can be your worst-earning one

Offer free shipping over $50 and more carts make it to checkout — but if shoppers trim the basket to hit the threshold, every order is smaller. Conversion rate goes up. Revenue goes down.

Tools that only report conversion rate call that a win. Otter reports conversion rate, average order value, and revenue per visitor together — and when they disagree, it says so instead of quietly declaring a winner.

  • Revenue per variant, compared with Welch’s t-test for unequal variance
  • Average order value and incremental revenue alongside conversion count
  • Reuse the GA4 purchase events you already trust — no re-instrumentation
Variant B“Free shipping over $50”
Conversion rate
4.7%+12.4%
Average order value
$61.20−18.0%
Revenue per visitor
$2.88−7.9%

Not a winner. Conversion is up 12.4%, but each order is 18% smaller — you would lose 7.9% of revenue per visitor by shipping this.

Illustrative example. Your numbers come from your own goals.

The testing layer should never cost you the revenue it is measuring.

99.9%

Uptime

<50ms

SDK load time

80-99%

Configurable thresholds

0

Flicker

The workflow

Test. Measure. Decide.

Everything you need to run a conversion rate optimization programme — from hypothesis to a decision you can defend — without stitching four tools together.

Explore all features

Test

Put two versions live and split traffic between them.

50% / 50%ASign UpBStart Free Trial

Visual A/B Testing

Test any element on your page. Unlimited variants, precise traffic splits, and a one-line install — no developer handoff.

0%5%10%15%thresholdControlVariant A+47%8.8%12.9%

Audience Targeting

Target by device, location, URL pattern, or custom attributes. Show the right test to the right visitors.

Measure

Put a number on it — in revenue, not just conversions.

Decision Score84.7%
Threshold 80%
ThresholdControl61.2%Variant B84.7%

Decision-Ready Analysis

Know when results are real. Choose frequentist or Bayesian analysis with configurable decision thresholds.

$2k$4k$6k$8k$10kWeek 1Week 2Week 3Week 4Week 5Week 6$9.8kRevenue growing

Revenue & Goal Tracking

Measure purchases, AOV, and revenue per variant — or reuse your existing GA4 conversion events as goals.

Decide

Get the answer to whoever signs off on the change.

# ab-test-alerts3OOtter2 min agoWinner declared: "Hero CTA" +23.4%OOtter18 min agoVariant B revenue: $4,280 (+41% vs control)

Slack Alerts

Get pinged the moment a test crosses your decision threshold. Winners and revenue milestones, right in your channel.

AAcme Inc.A/B Test Report: Hero CTA ExperimentMarch 15–22, 2026 · 12,480 visitorsCONVERSION+23.4%REVENUE$4,280DECISION SCORE97.3%Variant PerformanceControl: 3.2%Variant B: 3.9% (+23.4%)otterab.com/r/abc123Share

Branded Reports

Share results with clients via branded, password-protected reports. Your logo, your colors, your domain.

New

Model Context Protocol

Manage experiments with your favourite AI

Connect Otter to Claude Code, Claude Desktop, or ChatGPT. Create tests, inspect results, and ship winners — all conversationally.

  • Spin up tests from a prompt — variants, goals, and targeting
  • Pull live results and confidence scores into your chat
  • Ship winners and archive losers without leaving your editor
Read the MCP guide
claude ▸ otter-ab

you ›Create an A/B test on the pricing page that tries a bolder CTA colour.

claude ›Creating test pricing-cta-color with two variants and a 50/50 split…

Test launched · goal: signup_completed

you ›Any winners yet?

claude ›Variant B is leading at +18.4% with 94% confidence. Want me to ship it?

you ›

Getting started

Live in three steps

No implementation project, no tag manager archaeology. Paste, configure, and get a number you can act on.

See the full walkthrough
  1. 01

    Install the snippet

    Copy and paste one line into your site. Works with any website, CMS, or framework — no build step required.

    Under two minutes
  2. 02

    Create your test

    Use the visual editor to set up variants, pick your goals, and choose how much traffic to allocate. No coding needed.

    Point-and-click setup
  3. 03

    See what it earned

    Watch conversions and revenue roll in on a live dashboard. Otter tells you when a variant is genuinely ahead — and by how much money.

    Live revenue dashboard

Customers

Teams who stopped shipping on gut feel

What people say once the argument about which version is better has an answer attached to it.

Refreshingly simple!

PC

Phillip Clarke

Managing Director, Verified Review

Review

We switched from a big-name tool and saved hours every week. The setup was painless and the results dashboard is exactly what we needed.

SS

Susara Spangenberg

Head of Growth, Avery Mews

Review

Finally an A/B testing tool that doesn't need a team of engineers to set up. We had our first test live in under 10 minutes.

MR

Marcus Rivera

VP Engineering, ScaleUp

Review

Pricing

From$39/mo

Unlimited visitors. Unlimited tests. No MTU caps, no overage charges. When a test wins and traffic climbs, your bill stays exactly where it was.

See all plans

Switching?

Coming from VWO, Optimizely, or AB Tasty?

See side-by-side comparisons of pricing, features, and billing models — and why teams are moving to Otter.

vs VWOvs Optimizelyvs AB Tastyvs Mida

Your next test is worth something

Find out what your next test is worth

Put a number on your next redesign, price change, or headline — in revenue, before you commit to it everywhere.

Start free trial
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