TL;DR — Existing Shopify app detectors (Koala Inspector, ShopScan, Fera, BuiltWith) are Chrome extensions or SaaS dashboards. None do batch. I had 1,200 stores to qualify and View Source + Cmd-F was killing my afternoons, so I shipped an Apify actor that takes a list of Shopify URLs and returns the full app stack (Klaviyo, Yotpo, Judge.me, Loox, ReCharge…) + product catalog + reviews in JSON. No headless browser, ~$0.005 per store, 1,000 stores in 25 minutes. Live here → Shopify Scraper – Apps Spy + Reviews .

The afternoon that broke me

Six weeks ago I was prospecting for a B2B side-project. The hypothesis: "Shopify stores running Klaviyo + a paid reviews app are the right ICP — they spend money on retention tooling, so they will pay for ours."

To validate, I needed a list of Shopify stores and their installed apps.

The Shopify App Store does not give you that.…