Conversion rate optimization for Shopify brandsTry it free for 14 days
Get 3 free CRO ideas

Find what stops shoppers buying.

AI conversion rate optimization for Shopify stores. HI Engine finds where your store loses sales, builds the fix in your theme and A/B tests it.

  • 3 free CRO ideas
  • About 10 minutes

Prefer a call? Book a demo (opens in a new tab)

Brands moving with HI

“HI Engine feels like magic; the opposite of AI slop.”

Libie Motchan Duggal, Founder, Fulton · Read Fulton’s story

How it works. You approve every change.

See the full process

  1. Understand what holds shoppers back.

    HI combines store data, shopping behavior and customer feedback to uncover friction in your shopping experience.

    Illustrative example

    AnalyzingCustomer insight

    Shoppers may need clearer guidance on skin type.

    • Store data
    • Behavior & click maps
    • Customer surveys

  2. Know what to improve next.

    Get recommendations tailored to your store, prioritized by severity and estimated revenue impact—with a clear explanation of why they matter.

    Illustrative example

    Recommendation

    Make skin type guidance easier to find

    Why
    Customer feedback suggests uncertainty about which skin types it suits.
    Suggested change
    Bring relevant skin type information closer to Add to cart.
    • Customer evidence
    • Brand context
    • Estimated impact

  3. Preview the change. You decide.

    HI builds the improvement to fit your brand. Preview it in your store and request adjustments before anything goes live.

    Illustrative example

    Today
    Face serum30 mlDescriptionAdd to cart

    Ready for review

    Request changesApprove for testing

    Proposed
    Face serum30 mlDescriptionSkin type guideNewAdd to cart

  4. Test the change. Learn what works.

    HI runs an A/B test to measure whether the change helps. Every result informs what to try next.

    Illustrative example

    • AOriginal
    • BHI improvement
    50/50 split

    Experiment running

    • Collecting evidence
    • No winner declared yet

Want this for your store? Get 3 free CRO ideas

HI Agent knows your store.

01Brand

The store’s own look, imported from its website.

More from merchants

  • Fulton: beige felt slippers with the Fulton name on the side, worn on a sofa beside a sleeping boxer
    Libie Motchan DuggalFounder, Fulton

    “HI Engine feels like magic; the opposite of AI slop. Building and launching CRO tests is so easy, I keep thinking, ‘Wait, it can actually do that?!’ At Fulton, it’s meaningfully impacted our conversion rate, engagement rate, and AOV.”

    Read Fulton’s story

  • Dore & Rose: two women in white silk and silk eye masks against a blue sky, the Dore & Rose name across the picture
    Jelmer HendriksDore & Rose

    “With HI Engine, one person now gets the same CRO results that used to take a team of five.”

  • KyleFounder at Swoveralls

    “For us, HI Engine did for CRO what Canva did for design.”

  • ElizabethCo-Founder, The Great Fantastic (ex-Brooklinen)

    “HI Engine takes so much of that work and does it for you. It’s an incredibly impressive tool.”

  • KHOY: a green modular sofa with a zebra-pattern cushion on a black and cream rug, beside a wooden stool with a table lamp
    Kristian LawKHOY Company

    “HI Engine makes conversion rate optimisation and A/B testing remarkably straightforward. It’s intuitive to use, and the ability to quickly implement and test new ideas is a real advantage.”

What makes HI different.

HI does the work an agency or a testing tool leaves to your team, and shows its reasoning on every idea. Each point is something you can check in the trial.

The fix, not a report.
HI writes each change into your theme as native Liquid, JSON and CSS. No page builder, no injected scripts, no third-party layer on your storefront.
Every idea sized in $/month.
Ideas are ranked by impact, effort and brand risk, each with the reasoning behind it.
It knows what not to touch.
Your brand guidelines gate every idea. Some arrive marked “we wouldn’t touch this,” with the reason.
Nothing live without you.
Every change waits on a draft theme for your approval, checked by Shopify Theme Check, with one-click rollback.
Pay after it works.
14-day free trial. We ship your first 3 fixes in the first month. You pay only after they’re live and you’ve seen the results.

Who it’s for. How HI fits your ecom team.

  • CRO team member

    A CRO specialist in your Slack

    Ask HI Agent in the channel you already use. Ideas, sizes and status come back in the thread.

  • Claude MCP

    Already building with Claude?

    Connect HI Engine to Claude, Cursor or any MCP client and query your store from where you work.

  • Custom deployment

    Built around your stack

    A tool that isn’t listed, or one your team built? If it has an API, HI can connect to it.

  • Platform

    Run CRO on HI Engine

    Signals, CRO ideas, the task board and A/B tests in one place, inside the approvals you set.

Nothing goes live without your approval.

You see every change before your customers do, and you can undo it in one click.

  • Preview

    Every change goes to a draft theme first. Preview it in your own store.

  • Approval

    Nothing is published until you approve it. Approved tests can be cancelled until they start.

  • Rollback

    Every change is logged. Winners stay; the rest roll back in one click.

Technical details

Changes are written into your theme as native Liquid, JSON and CSS, the same code your developers would write. No page-builder app, no injected scripts, no third-party layer on your storefront. Shopify Theme Check validates each change, and full execution logs record everything HI does. SOC 2 is on our roadmap.

More on the product page

Pay after it works.

  1. Book a demoA live walkthrough on your store’s data, so you know whether HI fits.
  2. Start the 14-day free trialIf it fits, the trial starts from there. We ship your first 3 fixes in the first month.
  3. Pay after resultsYou pay only after the fixes are live and you’ve seen the results.

Custom pricing after the trial, from $1,500/month – based on your store size, credit usage and results.

Book a demo (opens in a new tab)

Not ready for a call? Get 3 free CRO ideas

Have a larger store?

Enterprise

Best for 8- and 9-figure Shopify brands and agencies.

Enterprise: book a demo (opens in a new tab)
  • Unlimited credits
  • Unlimited connected stores
  • Scalable, bespoke pricing