# 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. ## 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. ## Test. Measure. Decide. Everything a conversion rate optimization programme needs — from hypothesis to a decision you can defend — without stitching four tools together. - **Test**: A/B, A/B/n, and split-URL tests. Visual editor for no-code changes, custom JS/CSS when you need it, and audience targeting by device, geography, traffic source, UTM, or custom visitor properties. - **Measure**: Conversion goals for page views, clicks, custom events, DataLayer events, and revenue. Google Analytics 4 events work as goals directly, with no duplicate instrumentation. - **Decide**: Frequentist or Bayesian analysis with configurable thresholds, automatic multivariate adjustment, and a resolved decision score rather than a raw p-value. ## Live in three steps 1. Paste one line of code into your site's ``. 2. Create a test, define the variants, and pick the goals. 3. Read the score, lift, and winner status once the data arrives. ```html ``` The SDK is under 9KB, loads asynchronously, and applies changes before the page paints, so visitors never see a flash of the original. ## Pricing without visitor caps Otter charges per project, not per visitor. Every plan includes unlimited tests and unlimited visitors — no monthly tested-user caps, no overage bills when a campaign lands. Plans start at $39/month. ## Works with the stack you already run Shopify, WooCommerce, WordPress, Webflow, Wix, Squarespace, Framer, Next.js, and any site that can load a script tag. Purchases and order value flow through to revenue attribution on the platforms that support it. ## Built for automation - REST API for projects, experiments, and results: - OpenAPI specification: - MCP server for Claude, Cursor, VS Code, and Windsurf: --- - [Start free trial](https://www.otterab.com/signup) - [See pricing](https://www.otterab.com/pricing) - [How it works](https://www.otterab.com/how-it-works) 14-day free trial. No credit card required. Cancel anytime. --- Canonical page: https://www.otterab.com/