Does eLLMo use JavaScript on my store?

Yes, one small script in your theme's head. Its job is to pick which version a visitor gets and to send new-page visitors to it before the page draws. It never changes what shoppers see on the page and never hides it. Both versions are drawn by Shopify from your theme's own code.

Yes. Visitors in the new-page group are sent to a copy of your product template on the same product URL. That extra step falls on the new page, not on your current one, so a new page that wins has won with the handicap. Once you promote it, the product shows the new page directly and the redirect is gone.

Can I use eLLMo with Shoplift?

Yes. eLLMo's findings are a ranked list of what stops your buyers, in their words, and they make a strong backlog for any testing tool. If you also test in eLLMo, keep one tool per product page at a time, so two tests never split the same visitors.

Which tests can eLLMo run?

New or changed sections on a product page, and new product copy: the description, the title and the product details eLLMo writes. Each test is one product page against its current version, on a Shopify store. eLLMo does not run theme-wide, homepage, checkout or price tests today.

How does eLLMo decide a winner?

A test in eLLMo starts from a fix the simulated buyers already checked. On live traffic, eLLMo matches each order to the version that shopper saw and names a winner only when the difference holds up. It checks that the split is what you set and takes one look per full week, so checking the page more often never changes the result. By default the winner is the page that brings in more money per visitor.

eLLMo vs Shoplift

Shoplift runs the test you bring. eLLMo finds the test worth running.

Both tools A/B test real Shopify templates on your live traffic. Shoplift gives your team a place to run tests. eLLMo does the work of a CRO team and a developer: simulated buyers find why people leave your product page, eLLMo builds the fix as theme code, checks it with the same buyers before anyone sees it, and ships it, with or without an A/B test.

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At a glance

Shoplift and eLLMo, row by row.

What each tool does at each step, from the idea to the shipped winner. Every Shoplift row comes from Shoplift's own website and documentation, as of October 2026.

Where the test idea comes from
Shoplift
Your team, or Lift Assist, which suggests prebuilt sections using "test ideas from hundreds of top brands". The Pro plan adds a storefront audit by Shoplift's team.
eLLMo
10 to 50 simulated buyers shop your product page first. The test is the reason the most buyers gave for not buying.
Who builds the new page
Shoplift
Your team, in Shopify's theme editor. Lift Assist adds a section in your brand styles, but it does not add the content.
eLLMo
eLLMo writes the copy and builds the section as theme code on a draft of your theme. You review it and ask for changes.
When you can ship
Shoplift
When the test ends. Shoplift suggests at least 10,000 visitors per version and 14 days, and calls the result with a Bayesian "Probability to Win".
eLLMo
As soon as the same simulated buyers show the reason is gone. Ship the fix to the product with a one-click undo, or A/B test it on live traffic first.
How shoppers get each version
Shoplift
A script in your theme's head picks the version and sends variant visitors to a copy of the template or to a preview theme.
eLLMo
A script in your theme's head picks the version and sends new-page visitors to a copy of the product template.
Testing new product copy
Shoplift
Titles, descriptions, images and prices are store data, so theme tests cannot change them. Shoplift's guide tests product properties such as images and prices by duplicating the product and running a URL redirect test.
eLLMo
On the same product and the same URL. Only the new page shows the new copy. If it wins, eLLMo writes it to the product and keeps your old copy.
When the new page wins
Shoplift
Apply variant reassigns the template or publishes the new theme. A URL redirect test winner is re-routed by hand.
eLLMo
Promote puts the tested template live on that product, so the code shoppers saw is the code that ships. Roll back is one click.
What you pay for
Shoplift
Plans priced by total monthly store visitors, not tested visitors, from $99 a month. Tests pause above your plan's limit.
eLLMo
Plans are scoped to your catalog, not your store traffic. The simulations that find the test come with it.
Before the test has traffic
Shoplift
Nothing to read until visitors arrive.
eLLMo
Ranked findings in about 15 minutes, with $0 ad spend.

eLLMo vs Shoplift, compared row by row
Question	Shoplift	eLLMo
Where the test idea comes from	Your team, or Lift Assist, which suggests prebuilt sections using "test ideas from hundreds of top brands". The Pro plan adds a storefront audit by Shoplift's team.	10 to 50 simulated buyers shop your product page first. The test is the reason the most buyers gave for not buying.
Who builds the new page	Your team, in Shopify's theme editor. Lift Assist adds a section in your brand styles, but it does not add the content.	eLLMo writes the copy and builds the section as theme code on a draft of your theme. You review it and ask for changes.
When you can ship	When the test ends. Shoplift suggests at least 10,000 visitors per version and 14 days, and calls the result with a Bayesian "Probability to Win".	As soon as the same simulated buyers show the reason is gone. Ship the fix to the product with a one-click undo, or A/B test it on live traffic first.
How shoppers get each version	A script in your theme's head picks the version and sends variant visitors to a copy of the template or to a preview theme.	A script in your theme's head picks the version and sends new-page visitors to a copy of the product template.
Testing new product copy	Titles, descriptions, images and prices are store data, so theme tests cannot change them. Shoplift's guide tests product properties such as images and prices by duplicating the product and running a URL redirect test.	On the same product and the same URL. Only the new page shows the new copy. If it wins, eLLMo writes it to the product and keeps your old copy.
When the new page wins	Apply variant reassigns the template or publishes the new theme. A URL redirect test winner is re-routed by hand.	Promote puts the tested template live on that product, so the code shoppers saw is the code that ships. Roll back is one click.
What you pay for	Plans priced by total monthly store visitors, not tested visitors, from $99 a month. Tests pause above your plan's limit.	Plans are scoped to your catalog, not your store traffic. The simulations that find the test come with it.
Before the test has traffic	Nothing to read until visitors arrive.	Ranked findings in about 15 minutes, with $0 ad spend.

Both tools use a small script in your theme's head to choose who sees what, and both send new-page visitors to a copy of the product template. On delivery they are close. The difference is everything before and after the test.

Where they differ

Same delivery. Different everything else.

Shoplift is a strong testing tool. eLLMo does a bigger job: it decides what to test, builds it, checks it with the same buyers, and only then puts it in front of shoppers. Here is what that changes.

The test starts from a reason, not a list of ideas

Shoplift's ideas come from your team, from Lift Assist, which draws on "test ideas from hundreds of top brands", or, on the Pro plan, from an audit by Shoplift's team. Those are good sources of ideas. None of them is your buyers.

eLLMo sends simulated buyers, built from real buyer data and matched to your customers, through your live product page before anything is tested. Each one says where it hesitated, in its own words. Findings are ranked by how many buyers hit them, and the test you run is the top one, with the count and the quotes attached.

That order matters more than it sounds. Real wins are small: an analysis of 115 published tests found a median lift near 4%, and most of those tests did not have the traffic to see a win that size. We wrote about the arithmetic here. When traffic is the limit, what you test first is most of the result.

eLLMo does the developer's part

In Shoplift, "all edits happen directly in Shopify's Theme Editor." Lift Assist can drop in a prebuilt section, but Shoplift's own guide says it "does not automatically add content to this section." Someone on your team still designs the change, writes it and checks it.

In eLLMo the fix comes with the finding. eLLMo writes the missing details from facts your store already has, and builds the missing section as theme code on an unpublished draft of your live theme. It runs Shopify's Theme Check, shows the section in place on your real page on mobile and desktop, and checks that add to cart still works. You ask for changes until it is right, at any hour, with no ticket and no sprint.

You know before you test

A test is how most tools find out whether a change worked, and Shoplift suggests at least 10,000 visitors per version and 14 days to get an answer. Until then, you wait, and some of your shoppers see a change that may not work.

eLLMo finds out first. The simulated buyers who found the problem shop the new page on a draft of your theme, so you see whether the reason they gave went away before a single shopper sees the change. If it did, you can ship the fix to the product that day, with a one-click undo, or A/B test it to prove it on your orders. Either way, your traffic only goes to a change the buyers already checked.

Copy tests without a duplicate product

A product's title, description, images and price live on the product, not in the theme. Shoplift says so plainly: theme tests cannot change them. Its guide for testing product properties, such as images and prices, has you duplicate the product, edit the duplicate, and run a URL redirect test between the two products.

eLLMo tests new copy on the same product and the same URL. The new version is stored beside the current one, and only the new page reads it, so reviews, stock and order history stay on one product. When the new copy wins, eLLMo writes it to the product and keeps your old copy for roll back.

Before any shopper is split, eLLMo opens the new page on your live store and checks that the new copy is there and your current page is unchanged.

The winner is already built

When a test ends, Shoplift can apply a winning template or theme for you. A URL redirect test, the route its guide uses for product copy and images, has no apply button: Shoplift's docs say "you need to update the routing yourself", across ads, menus, links and redirects.

Every eLLMo test is a copy of your product template with the change built in. Promote assigns that template to the product, so the code shoppers saw in the test is the code that ships, with nothing to rebuild. A copy test winner is written to the product. Either way, roll back is one click.

A fair read

Which one fits your team.

Shoplift has a long track record on Shopify and tests more page types than eLLMo does today. Here is where each one fits.

Shoplift is a good fit when

Your team already has a backlog of ideas and a designer or developer to build them.
You want to test whole themes, homepage and collection templates, or prices.
You run many tests a year and have the traffic to support them.

eLLMo is a good fit when

You do not know what to test next, or your last few tests came back flat.
Your traffic can support only a few tests a year, so each one has to count.
You want the copy and the section written and built for you, not just a place to run them.
You want to test product copy on the same product and URL.
You want fixes on your store sooner, without waiting on a developer.

How eLLMo works

A developer and a CRO team that never log off.

eLLMo does the whole job: it finds why shoppers leave, builds the fix, checks it with the same buyers before anyone sees it, and ships it, with or without an A/B test.

01 Find

Simulated buyers find why

10 to 50 simulated buyers, matched to your customers, shop your live product page and say where they stopped, ranked by how many hit each reason.

02 Build

eLLMo builds the fix

eLLMo writes the copy or builds the missing section as real theme code on a draft of your theme, at any hour, with no ticket.

03 Check

The same buyers check it

The simulated buyers who found the problem shop the new page, so you know whether the reason went away before any shopper sees it.

04 Ship

Ship it, or prove it

Publish the fix with a one-click undo, or A/B test it on live traffic. eLLMo watches every test around the clock.

Questions

What teams ask before they switch.

Keep comparing

Other comparisons.

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eLLMo vs JavaScript A/B testing

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A/B testing in eLLMo

How eLLMo builds the fix as theme code, tests it on live traffic and ships the winner.

See A/B testing

Find the test worth running.

Start now and run simulated buyers on your product page. Or book a 30-minute demo and we'll run the panel on your page live, with your team.

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