Research tools for Shopify merchants

See what your competitors sell best.

Every Shopify store keeps a public best-seller ranking, a theme and a stack of apps. Sellscope reads them for you, so you can see what works before you spend on it.

Try the free theme detectorStore Inspector: coming soon
deathwishcoffee.combest sellers, store’s own order
#1Dark Roast Coffee$19.99
#2Dark Roast Single Serve Pods$14.99
#3Valhalla Java Odinforce Blend$15.99
#4Valhalla Java Single Serve Pods$14.99
Read by Store Inspector · September 2026147 products · $29.98 median price
Tools

Two ways to look inside a store.

Store Inspector

A Chrome extension. Open any Shopify store and click once: best sellers in the store’s own ranking, theme and apps, price range, discounts and every new launch. Export the catalog to CSV and get alerts when a competitor adds products.

Free · Pro $9 / monthSee Store Inspector

Shopify theme detector

Enter a store’s address to see its theme and version, and the apps it runs for reviews, email, upsells, pixels and payments. Free, no sign-up.

FreeDetect a theme
Guides

Learn to read a store.

GuideHow to see any Shopify store’s best-selling products GuideHow to find out what theme a Shopify store is using GuideHow to find out what apps a Shopify store uses GuideHow to track a competitor’s new products on Shopify AllAll guides