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Shopify App Detector

See which apps any Shopify store runs: reviews, popups, email, upsells, analytics and more. You get the theme too. Free, no sign-up.

How app detection works

A Shopify app that shows anything on the storefront has to put code on the page. The detector reads one page of the store and looks for three kinds of trace:

  • App blocks and app embeds. Modern apps plug into the theme through Shopify's theme app extensions. Shopify wraps each one in a comment that names the app, like shopify://apps/judge-me-reviews/blocks/…. This is the most reliable signal.
  • Script tags.Older apps inject scripts through Shopify's ScriptTag API. They show up as a list of script addresses, which the detector matches by host (for example static.klaviyo.com is Klaviyo).
  • Tracking tags. Tools that are not Shopify apps at all, like Hotjar, Microsoft Clarity, Google Tag Manager or the Meta Pixel, load from their own hosts. The detector reports those too.

Apps the detector recognises get their real name and a category. Apps it doesn't know yet still show up, named from the handle Shopify prints, with a link that searches the App Store for them.

What app detection can't see

Any app that leaves nothing on the storefront is invisible to every detector, this one included. That covers a lot of a store's stack:

  • Admin-only tools: inventory, accounting, order routing, reporting.
  • Checkout and post-purchase apps that run inside Shopify checkout.
  • Tracking added through Shopify's Customer Events (web pixels), which runs in a sandbox instead of on the page.
  • Apps that only load on other pages, like a reviews widget on product pages only.

Tip: run the detector on a product page as well as the home page. Reviews, upsell and size-chart apps often load only there.

How to read a competitor's app stack

An app list tells you what a store pays for, not what works for it. A few things are still worth noticing:

  • Reviews plus email capture is the baseline for most stores that sell well.
  • A popup or email form means they are building a list from first-time visitors. Look at what they offer in it.
  • A heatmap or session-replay tool means they watch what shoppers do before changing the store. If it is missing, they are probably guessing.

Comparing heatmap tools? See the best Shopify heatmap apps and Microsoft Clarity alternatives. Want to know the theme behind the store? The Shopify Theme Detector explains how themes are identified, renamed copies included.