Theme Scientist A/B Tester

Theme Scientist A/B Tester

by Speed Boostr

Easy AB Testing + Analytics + Theme Scheduling

5.0 of 5 stars(6 reviews)

Increase Conversion Rate

A/B testing shows you which version of products or themes converts better. Run a test, publish the winner, enjoy higher conversion rates.

Get scientific results

Take the guesswork out of wondering which price, layout, or colors are best and use real data. Our app swaps versions and tracks the stats.

Theme Scheduler

Save time and don't worry about being online at a specific time to publish a theme. Schedule themes to publish exactly when you want.

About Theme Scientist A/B Tester

A/B testing is key to maximizing your conversion rate.

Theme Scientist is an easy to use A/B testing app for Shopify.

New for 2021

We're dedicated to providing the best A/B testing tool on Shopify and have already added new features this year. We take requests and build features for you.

Increase sales without buying more traffic

Improving conversion rate maximizes the value on your website traffic. A single successful experiment can lead to massive long term gains in revenue.

How to increase conversion rate?

Use A/B testing to compare site elements and product attributes, then get data driven results and implement the winners.

How does Product A/B testing work?

  1. Use the app to select a product
  2. Change the product attributes on version B
  3. Start the test and let it gather data
  4. Check the stats in the app to see which version is winning

The app will swap the 2 versions every day at midnight and track the stats.

How does Theme A/B testing work?

  1. Duplicate your live theme
  2. Make a change to the new theme (maybe the add to cart button color)
  3. Choose the 2 themes to test and start the A/B split test
  4. Check back and analyze your stats to see which website features / version performs better

The app will swap the 2 versions at the interval you choose (daily, hourly, etc) and track the stats: Orders, Sales, Adds to cart, Visitors, Sessions, Page views.

How long to split test?

2 weeks is a good minimum time frame but the longer a test runs and the higher the statistical significance level, the more accurate your results will be.

What is statistical significance?

This is a mathematical formula to predict the probability that 1 version is better than the other.

Theme Scientist includes statistical significance calculations for every A/B test.

Free Theme Scheduler feature

You can set a theme to publish at a specific time in the future.

This is great for publishing promotions at exactly the time you want without having to be online to make changes or set a new theme live.

The scheduler is also useful for running daily flash sales where new themes / graphics need to be swapped every hour.

Who this app is for

  • If you want to increase your conversion rate
  • If you want to maximize the value of your inbound traffic
  • If you want to learn what customers in your niche respond to best

Built with performance in mind

Our A/B testing works in the backend so this app won't affect your load speed like other apps.

In the store front there is 1 small analytics pixel that loads at the end of the page so it does not cause render blocking.

Rockstar support

We're a team of experienced Shopify developers with a focus on optimization. If you want some ideas or need help with anything just give us a shout.

Media gallery


Pricing 14-day free trial



  • Theme Scheduler
  • Schedule unlimited theme jobs to publish a theme at a specific time in the future



  • 14 day free trial
  • Theme A/B testing
  • Product A/B testing
  • Analytics
  • Theme scheduler
  • For stores doing up to 200 orders per month



  • 14 day free trial
  • Theme A/B testing
  • Product A/B testing
  • Analytics
  • Theme scheduler
  • For stores doing up to 1,000 orders per month



  • 14 day free trial
  • Theme A/B testing
  • Product A/B testing
  • Analytics
  • Theme scheduler
  • For stores doing 1,000+ orders per month

* All charges are billed in USD.
** Recurring charges, including monthly or usage-based charges, are billed every 30 days.

5.0 of 5 stars

The overall rating reflects the current state of the app. It accounts for all app reviews but prioritizes the most recent ones.

  • 5 of 5 stars
    100% of ratings are 5 stars
  • 4 of 5 stars
    0% of ratings are 4 stars
  • 3 of 5 stars
    0% of ratings are 3 stars
  • 2 of 5 stars
    0% of ratings are 2 stars
  • 1 of 5 stars
    0% of ratings are 1 stars

Most recent reviews

Turtles Project

The best split-testing app I've tested so far, there is everything I need and the customer service is super reactive!
I also suggested a new feature and it got added !! 100% recommended

Developer reply

July 12, 2021

Love the enthusiasm, thanks! We appreciate the feature suggestions and will continue adding more :)

Spirit Magicka

This is a beautiful app! Don't let the currently small number of reviews turn you off. It's ease of use, simplicity, and effectiveness are top notch. It works like an absolute charm. And apparently - the dev crew is fantastic also, that's why I'm writing this review, I casually mentioned a feature I thought would be good, and wouldn't ya just know it, they said they will add it in - and quite soon even. Yea, for AB testing, it's rad.
Theme testing and product testing with price testing also. It's legit awesome.

Developer reply

June 11, 2021

Thank you! And yes your feature was a great request we're always ready to listen and add more functionality, coming soon. We appreciate you.

Rings By Lux

Don't let the lack of reviews for Theme Scientist scare you away. We actually tried them all, and were ready to give up when we took a shot on TS with no reviews. Wow, intuitive, exactly the type of tests we were looking for, and unlike some of the others, it never broke themes while testing. We are actually in the ABT mode (Always Be Testing) now for life now, and this App has already given us the insights to double, yes double our conversion rates in 3 months. Word of wisdom, small tests, and keep variables isolated, so you know what is moving the needle. Last but not least, Joe, the man behind the curtain is an absolute Rockstar. Like us, always putting the customer first, and genuinely concerned about us maximizing our value from the app. Fantastic product, fantastic company, fantastic customer service!

Developer reply

April 6, 2021

Wow epic review thanks for sharing!

Haha ABT for sure that's the winner's mindset, testing is where it's at. We're happy to hear the app is helping grow your business, and we're very appreciative of you sharing your experience. Thank you