TestLift: A/B Testing vs Theme Scientist A/B Testing
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 12, 2026 for TestLift, Nov 13, 2026 for Theme Scientist A/B Testing.
The short answer
- Only TestLift lists a free plan. Paid plans start at $29/month for TestLift and $9.99/month for Theme Scientist A/B Testing.
- TestLift lists 3 features Theme Scientist A/B Testing’s listing doesn’t mention, including Custom dashboards, Event tracking, Marketing attribution.
Head to head
Easy AB Testing + Analytics + Theme Scheduling
- United States
- Italy
- Australia
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Free
- · 3 active tests
- · Bayesian results
- · Buy-button and slideshow campaigns
- · Email support
- · Guardrails
Pro
- · 7-day free trial
- · All Free features
- · Priority email support
- · Unlimited active tests
Tester
- · 14 day free trial
- · Analytics
- · Product A/B testing
- · Theme A/B testing
- · Theme scheduler
- · Up to 50 orders per month
Tester+
- · 14-day free trial
- · Analytics
- · Product A/B testing
- · Theme A/B testing
- · Theme scheduler
- · Up to 250 orders per month
Tester Pro
- · 14-day free trial
- · Analytics
- · Product A/B testing
- · Theme A/B testing
- · Theme scheduler
- · Up to 500 orders per month
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureTestLift is the Shopify A/B testing app for buy-button copy and homepage slideshows. Test Add to cart and Checkout. Test the homepage slideshow shoppers see first — a new image plus optional heading and copy, as one campaign. See which version wins. No theme rewrite. Test buy-button copy from Shopify admin with no theme code edits. Test a homepage slideshow image plus optional heading and copy as one campaign.
Maximize your conversion rate by understanding what drives customer conversions. With Theme Scientist, you can conduct AB testing on your Shopify theme effortlessly and without code. Each theme test delivers critical data to optimize your store and improve sales. Our no-code solution makes it easy to experiment with theme and product details.
- Test Add to cart and Checkout copy without editing theme code
- Test the homepage slideshow with a new image plus optional heading and copy
- See which version wins with Bayesian winner signals
- Protect revenue with built-in guardrails
- Run AB testing on your Shopify theme – learn what improves conversion rate!
- Run AB testing on your products – change titles, descriptions, and more
- Use AB testing results to enhance customer experience and boost conversion rates
- Easily schedule changes to your Shopify theme for timed promotions!
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure |  TestLift |  Theme Scientist A/B Testing |
|---|---|---|
| Detected stores | Not published | 80 |
| Net store change, 28 days | 0 | −5 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Apparel & Accessories, Health & Beauty, Home & Garden |
| Top store countries | Not published | United States, Italy, Australia |
Reviews
| Measure | TestLift | Theme Scientist A/B Testing |
|---|---|---|
| App Store rating | Not published | 4.0 ★ |
| App Store reviews | Not published | 13 |
| New reviews, 28 days | Not enough data | 0 |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | TestLift | Theme Scientist A/B Testing |
|---|---|---|
| Free plan | Yes | Not listed |
| Lowest paid monthly plan | $29/month | $9.99/month(ahead) |
| Longest free trial | 7 days | 14 days |
| Plans listed | 2 | 3 |
Listing
| Measure | TestLift | Theme Scientist A/B Testing |
|---|---|---|
| Shopify category rank | #1568 | #427(ahead) |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Sep 7, 2026 | Mar 5, 2020 |
| Languages | 1 | 1 |
| Developer | Baruch Havia Consulting, Limited Liability Company | PreviewX |
FAQ
TestLift and Theme Scientist A/B Testing: common questions
- Is TestLift or Theme Scientist A/B Testing cheaper?
- Only TestLift lists a free plan. Paid plans start at $29/month for TestLift and $9.99/month for Theme Scientist A/B Testing. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- What features does each app list that the other doesn’t?
- TestLift lists 3 the others don’t mention, such as Custom dashboards, Event tracking, Marketing attribution. Theme Scientist A/B Testing lists 2 the others don’t mention, such as Activity tracking, Checkout analytics. A feature missing from a listing may still be supported; this compares what each App Store listing says.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Nov 12, 2026 for TestLift, Nov 13, 2026 for Theme Scientist A/B Testing; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Nov 12, 2026 for TestLift, Nov 13, 2026 for Theme Scientist A/B Testing. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.