Research · 7 min read

How to check the Shopify apps a competitor is using

A store's app stack reveals its whole growth strategy. Here's how to read it.

The theme tells you how a store looks. The apps tell you how it actually sells — how it captures emails, collects reviews, upsells at checkout, and supports customers. That's often the more valuable half of competitive research, and you can uncover a lot of it in seconds.

How app detection works

Just like themes, many Shopify apps leave public traces in a store's source — a script from the app's servers, a recognisable CDN reference, or a widget's markup. A detector matches those traces against a library of known apps and reports what it finds. It only reads what every visitor's browser already loads; nothing private is involved.

What the categories tell you

When you scan a store, group what you find by category — each one maps to a lever the business is pulling:

• Reviews (Judge.me, Loox, Yotpo, Okendo): shows how seriously they treat social proof, and whether they use photo/video reviews to boost conversion.
• Email & SMS (Klaviyo, Omnisend, Attentive, Postscript): reveals their retention engine. A store running Klaviyo plus an SMS tool is investing heavily in repeat purchases.
• Loyalty (Smile.io, LoyaltyLion): signals a focus on lifetime value, not just first orders.
• Page builders (PageFly, GemPages, Shogun): explains those custom-looking landing pages without a fully custom theme.
• Upsell & conversion (ReConvert, Rebuy, Vitals): shows how they raise average order value.
• Subscriptions (ReCharge): tells you recurring revenue is part of the model.
• Support & chat (Gorgias, Tidio): indicates how they handle customer service at scale.

Turning a scan into a plan

Scan 10–15 competitors and tally the apps. Patterns jump out fast:

1. The near-universal apps — the review or email tool almost everyone runs — are usually table stakes. Adopt those early.
2. The apps only the top performers use — a loyalty program, a sophisticated upsell tool — often mark the difference between a hobby store and a serious one.
3. Gaps — a category nobody in your niche uses — might be an opportunity to differentiate, or a sign it doesn't move the needle for these products.

What app detection can't see

Be honest about the limits. Apps that work entirely in the Shopify admin, or that leave no public trace, won't show up. So an empty or short list doesn't always mean a store runs nothing — just that nothing detectable was in the page. Treat the results as a strong signal, not a complete inventory.

Used well, an app scan turns "how do they do that?" into a concrete stack you can start building toward. Pair it with theme research for the full picture of how a store is put together.