Buy-button copy
Change what your purchase button says and see which wording gets more shoppers through. Set it all from Shopify admin.
- Add to cart
- Checkout
- Your own button text
Variant A Variant B
Test your buy button, slideshow, and homepage sections without touching theme code.
Every shopper sees one version and keeps seeing it. TestLift shows you which version is winning, how confident to be, and what it would cost you to call it early — then protects your traffic by pausing the test if the new version is clearly losing.
Built and tested on Dawn and Shopify’s free themes. On another theme? Pro includes help getting tests wired; email support@testlift.app.
What it tests
Two kinds of test. One version per shopper.
TestLift is the Shopify A/B testing app for button copy and homepage sections. Pick what to change, and see which version sells better. No theme code.
Homepage sections
Swap the image shoppers see first — plus an optional heading and copy — as one clean test, so you know exactly what made the difference.
Reading results
Know when you've actually got a winner.
Most testing tools show you a scoreboard and leave the judgment call to you. TestLift tells you how likely each version is to win, how settled that answer is, and when it is safe to act. Your real numbers live in the app — not on a marketing page.
- Probability to win How likely this version is to be the better one, based on the data so far.
- Uplift How much better or worse a version is doing than your original.
- Confidence range The band the real difference is likely to fall in, rather than one flattering number.
- Cost of calling it early What you stand to lose if you ship this version and it turns out to be the weaker one.
- Automatic guardrails TestLift protects your traffic by pausing the test if the new version is clearly losing.
How it works
Three steps, all from Shopify admin.
-
01
Set up the test
Pick what to change — your button text, or a homepage section image with an optional heading and copy. One change per test.
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02
Shoppers see one version
TestLift runs quietly on your storefront and shows each shopper one version. They keep seeing the same one for the whole test.
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03
See which one wins
The numbers update as traffic comes in, so you know when a result is solid enough to act on. TestLift protects your traffic by pausing the test automatically if the new version is clearly losing.
Why TestLift
Careful with your store while it learns.
A test runs on your live store, in front of your real shoppers. Every part of TestLift is built around that.
Revenue, not clicks
Versions are judged on the orders and revenue they actually produce — not on clicks that never turn into sales.
You pick the split
Tests default to an even 50/50. You choose how much traffic each version gets from Shopify admin.
Ends on its own
Your test ends after the duration you set, so nothing keeps running in the background. Tests default to 14 days, and you can change that in Settings. TestLift also pauses the test if the new version is clearly losing, so it stops taking traffic.
Winner takes over
When a version wins, roll it out to every shopper straight from the app — the win does not wait on a theme update.
Your theme
Light on your store, wired up right.
TestLift installs as a Shopify app embed — no theme edits, no code in your layout, nothing to maintain. The whole runtime is about 8KB compressed, in two files that load after your page, not in front of it.
TestLift is built and tested on Dawn and Shopify’s free themes. Using another theme? Email support@testlift.app. Pro includes help getting your tests wired up on that theme.
Pricing
Free to start. Pro is $29 a month.
Free
$0
- 3 active tests
- Button and section tests
- Full results and confidence range
- Automatic guardrails
- Email support
Pro
$29/mo
- Unlimited active tests
- All Free features
- Help wiring tests on another theme
- Priority email support
- 7-day free trial
Questions: support@testlift.app
Questions
Plain answers.
What can I test?
Your buy-button text — Add to cart, Checkout, or wording you write yourself — plus homepage sections: the slideshow, featured images, and image with text. A section test swaps the image and, if you want, the heading and copy, as a single test.
Do I need to touch my theme code?
No. TestLift installs as a Shopify app embed and everything is set up from your admin. There is no code to add and nothing to maintain when you are done.
Which themes does it support?
TestLift is built and tested on Dawn and Shopify’s free themes. Using another theme? Email support@testlift.app. Pro includes help getting your tests wired up on that theme.
How do I know a version actually won?
TestLift uses Bayesian statistics to show each version's probability to win, its uplift, a confidence range, and what it would cost to call the test early. TestLift protects your traffic by pausing the test automatically if the new version is clearly losing.
What does "Bayesian" mean?
It is the branch of statistics that answers the question you are actually asking: how likely is it that this version beats the other one? Classic testing tools answer with a p-value, ask you to fix a sample size up front, and quietly punish you for peeking early. TestLift keeps a running probability instead — check any time, act when the odds are convincing, and see exactly what acting now would risk.