I’ve been working with Shopify for years. During that time I’ve built stores, customised themes, and tested more apps than I’d care to admit. One thing that always frustrated me was trying to figure out what theme or app another store was using. That’s why I built WhatThemeDetector.com.
This site gives you two tools: a Shopify Theme Detector vs Shopify App Detector. They sound similar, but they do very different jobs.
Shopify Theme Detector
A Shopify theme is the design framework of a store. It sets the layout, colours, typography, and general look.
When you run a site through the Theme Detector, the tool checks the code and reports back on:
- The theme name
- Whether it’s free or paid
- The developer or marketplace it came from
- If the theme has been renamed
For example, the detector might identify a free theme like Dawn or a premium one such as Impulse or Showcase. Knowing this helps if you want to build something similar, because you can start from the same base theme instead of guessing.
Shopify Theme Detector vs Shopify App Detector: The Difference Explained
Shopify App Detector
Apps are different. They add features and functionality on top of the theme.
These features can include:
- Reviews
- Email marketing
- Upsells and cross-sells
- Subscription billing
- Currency conversion
The App Detector looks at the scripts running on a store and identifies which apps are being used. It can usually pick up common tools such as Klaviyo, Judge.me, or ReConvert.
For anyone running a Shopify store, this is useful because it shows which apps other shops rely on to increase sales and improve customer experience.
Why You Need Both
The two detectors work best together. The theme shows how a shop looks. The apps reveal how it works.
If you’re researching competitors, both sets of information are valuable. You get the design framework and the conversion tools, which together give you a much clearer picture of the full tech stack.
Example
Take a fashion store as an example.
- The Theme Detector shows the store is running on Showcase, a premium theme built for big images.
- The App Detector then highlights Judge.me for reviews, Klaviyo for email, and ReConvert for post-purchase offers.
That gives you both sides: design and functionality.
FAQs
Can you tell if a store is using a paid theme?
Yes. The detector can identify both free and premium themes, even if they’ve been renamed.
Can all apps be detected?
Not always. Some apps run invisibly, but most major ones leave a trace that can be picked up.
Is it legal to check what a store is using?
Yes. The tools only read public code that anyone can view.
Final Thoughts
A theme sets the style of a store. Apps add the features that make it sell. Both are important, and that’s why I built WhatThemeDetector.com with two detectors instead of one.
Try them here:
