For an existing store: paste your URL and we detect installed apps across 45+ signatures, then flag the critical categories you are missing. For a new need: pick a category and we recommend the strongest options for your budget.
It reads the scripts and markup a Shopify store loads publicly and matches them against known app signatures. It sees what any visitor's browser sees, nothing more.
No. Apps that only run in the admin, or that add nothing to the storefront, leave no public trace. What it does find is the set that affects your visitors — which is the set that affects speed.
Each app usually adds JavaScript that runs in the visitor's browser. Twenty apps means twenty scripts competing with the work of showing your page, and removed apps often leave their scripts behind in the theme.
Yes, on any live Shopify store. It is the fastest way to see which review, upsell or subscription app a competitor runs.
Yes, with no sign-up. We use it ourselves as the first step of every speed audit.
View the page source and search for cdn.shopify.com/extensions and for scripts loaded from other domains, then confirm in the Network tab of developer tools. Both point to apps running on the storefront.
Because their code is still in your theme. Uninstalling removes an app's blocks and embeds, but code pasted into theme files stays until someone deletes it — and it still loads for every visitor.
Only partly. Checkout extensions and Shopify Functions run on Shopify's side, so discount, delivery and payment logic leaves little or no trace on the storefront.
There is no fixed number; what matters is what each one loads. A store with eight apps can be slower than one with twenty if those eight load heavy scripts on every page.
Apps that touch the storefront leave traces in what the browser downloads. Here is where to look, and what you will never see from outside.
View the page source and search for cdn.shopify.com/extensions. Apps built on theme app extensions load their files from that path, and the file names usually say what the app does.
Then look for scripts loaded from other domains. Review, email, chat and subscription apps typically load a script from their own domain, and the domain names the vendor.
Open developer tools, select Network, filter by JS and reload. Almost everything not served from the store's own domain or Shopify's CDN was added by an app, a pixel or a tag manager — and the same list shows what each one weighs.
Since Online Store 2.0, apps add themselves to a theme as app blocks inside sections or as app embeds that load on every page. On your own store, App embeds in the theme editor shows them; switching one off and measuring again is the cleanest way to see what an app costs in speed.
Plenty of apps never touch the storefront: inventory and accounting tools, Shopify Flow automations, apps that only listen to order webhooks, and discount or delivery logic running as Shopify Functions. No detector sees those, ours included — a short list of detected apps does not mean a short app bill.
Removing an app removes its app blocks and embeds, but code an app or a developer pasted into theme files stays behind. On older stores, scripts for apps uninstalled years ago often still load on every page. If the detector finds an app you no longer pay for, delete that code first.