How to Find Shopify Stores Using a Specific App (With Data)

If you type "how to find Shopify stores using a specific app" into Google, a good chunk of what comes back doesn't actually answer that question. It answers a different one: what apps does this one store use. Those are opposite directions of the same lookup, and mixing them up wastes time before you've even started.

This post is about the first direction: starting from an app (say, a reviews app or an SMS tool) and ending with a list of stores that run it. We'll also cover the second direction briefly, because you'll need it once you have a list and want to check individual prospects, and because most of the tools that rank for this query are actually built for that instead.

Two different questions that look like the same search

"Which stores use Klaviyo" and "what apps does this store use" require different tools. The second question is a single-storefront lookup: you already know the domain, and you're checking its tech stack. That's what browser-based app detectors and extensions are built for, and it's a fast, useful check once you've already got a store in front of you. If that's what you actually need, an app detector is the quicker path.

The first question, finding stores by app, requires something that has already crawled or indexed a large number of storefronts and tagged them by what's installed. That's a database problem, not a single-page lookup problem, and it's a smaller category of tool than the search results suggest.

Why anyone bothers with this in the first place

App developers use it for lead generation: find stores that already run a competitor's app, or that run a complementary one, and pitch accordingly. Agencies and Shopify Plus partners use it to scope a prospect before a call, since knowing a store already runs a heavyweight reviews or subscription app changes what a migration or rebuild actually involves. None of that requires guessing. It just requires a dataset that's organized by app rather than by domain.

How many stores and installs are actually in play

Scale matters here because it tells you whether "search by app" is even a reasonable ask of a dataset. As of August 22, 2026, StoreInspect's index counted 986,167 customer-visible Shopify stores, with 729,844 of those having at least one contact method, 978,221 linked to a known myshopify.com domain, and 778,987 with country data attached, according to StoreInspect.

On the app side, Store Leads reports tracking 12,188,478 installs across 8,320 different apps, with 20.5% of Shopify stores having installed the Judge.me Product Reviews App, 13.8% having installed Klaviyo: Email Marketing & SMS, and 11.4% having installed Shopify Inbox, according to Store Leads. Those percentages are a useful sanity check: if a tool claims an app you're researching is installed on a implausibly large or small share of stores relative to those benchmarks, that's worth questioning before you trust the list.

The databases built to search by app

This is the method that actually matches the question. BootLeads, for example, lets you filter by app and reports 78,995 stores running the Loox reviews app, of which 15,837 are in Apparel & Accessories, out of 3,112,692 Shopify stores identified among 7,082,115 total searchable stores, according to BootLeads. The same dataset lets you stack a second filter on top: BootLeads cites 7,872 stores with 100+ products and 3,810 stores with email contact info available, meaning you can go from "runs Loox" to "runs Loox and has a catalogue big enough to matter" in one pass.

That catalogue filter is worth sitting with for a second. If you're qualifying a list of stores by app and also want to know how big each store's product line actually is, pulling the catalogue directly rather than trusting a filter's count is the more reliable check. StorePrism's product exporter does that part: point it at a domain and it pulls the catalogue so you can see product count and structure yourself.

BootLeads also tracks installs and removals, flagging apps added within the last 45 days or dropped within the last 90, which turns a one-time search into something closer to a monitoring feed: you can watch for a target account installing a competitor's app, or dropping one, rather than only checking once.

Single-store detectors, the other direction

Tools like ShopScan and browser extensions for app detection solve the inverse problem: given one store, what does it run. Instant's research puts the average Shopify store at six or more installed apps as of 2025, according to Instant, which is a reasonable reminder that a store rarely runs just one thing worth knowing about. Once a database search gives you a shortlist of stores by app, running each one through a single-store detector is a reasonable second pass, because it tells you the rest of the stack, not just the app you searched for. StorePrism's app detector works this way: it checks one storefront and lists what's identifiable from the outside.

A manual method, for when you don't have a database

One technique that shows up in less prominent guides is reverse-lookup through app reviews: open the app's listing on the Shopify App Store, read through its reviews, and look for store names or usernames that reviewers mention or that are visible in their profile. Then search those names directly. It's slow and it only surfaces stores whose owners left a public review, so treat it as a fallback for niche apps that aren't well covered by the larger databases, not a primary method.

What this kind of search doesn't prove

Every method above works from what a storefront shows to a visitor, whether that's a script tag, a widget, a checkout element, or a theme snippet. That means apps with no visible storefront trace, admin-only tools, backend integrations, or anything a developer has deliberately hidden, won't show up in these results. BootLeads notes its own detection is based on what each public storefront shows, which is an honest limit worth repeating: a store not appearing in a "runs app X" list doesn't mean it isn't running app X. It means nothing detectable from the storefront pointed to it. The same goes for white-labeled or rebranded versions of an app, which can look like a different tool entirely from the outside even when the underlying service is the same.

Qualifying the list once you have it

A list of stores that run a given app is a starting point, not a finished one. Before you spend outreach time on any of them, it helps to look at two more things. First, what theme the store is running, since a heavily customized premium theme is a different scope of work than a default one if you're pitching a rebuild or migration. StorePrism's theme detector reads that from the storefront directly. Second, roughly what the store earns, since a store running the app you're targeting but doing very little revenue is a different priority than one doing a lot. That's the point where a revenue estimate becomes more useful than the app filter alone.

Where StorePrism fits

If you'd rather skip piecing this together from several tools, StorePrism's own lookup takes a single domain and returns what it runs, what it sells, and an estimate of what it earns in one pass, which is useful once you've already narrowed a list down to a handful of real candidates. For the full set of lookups, including the theme, app, and product tools mentioned above, StorePrism's free tools cover the individual-store side of this research.

FAQ

How do I find stores using a specific Shopify app? Use a database that indexes stores by installed app rather than a single-store detector. BootLeads and similar tools filter by app name and let you stack other filters, like product count or install recency, on top.

How many Shopify stores are there? Counts vary by what's being measured. StoreInspect's index put the number of customer-visible stores at 986,167 as of August 22, 2026. BootLeads separately reports 7,082,115 total searchable stores, with 3,112,692 identified as Shopify. The gap between those figures reflects different definitions of "store" and different crawl methods, not a disagreement about the platform's actual size.

Is there an official Shopify store search? None of the sources reviewed here point to one. Every method covered, databases, extensions, and manual review-mining, is a third-party tool built on top of what's publicly visible on storefronts, not an official Shopify feature.

Can I search by niche or location? The databases that support app filtering generally support other filters too, like country or product category. StoreInspect's index, for instance, has country data attached to 778,987 stores.

Is it legal to research Shopify stores this way? The research notes behind this piece don't include a legal opinion on that question, so nothing here should be read as one. What's described above is reading information that's already visible to any visitor on a public storefront.

The short version

If the question is "which stores run this app," go to a database that's organized by app, not a single-store checker, and expect it to miss anything that doesn't leave a storefront trace. If the question is "what does this one store run," that's the other tool, and it's a reasonable second step once you've already got a shortlist. Either way, a list of stores is only as useful as what you do with it next. StorePrism's revenue estimator is a reasonable place to take that shortlist, so you're prioritizing by what a store actually earns rather than by the app filter alone.