Free to see the drift. $49 to watch it.
The public audit reads what your storefront already serves. Catalog monitoring is the Shopify app that compares that against what Google and Meta actually hold - billed inside Shopify, 14-day trial, $49/mo.
- Paste a Shopify domain. We read /products.json plus one product page.
- Missing types, images, thin copy, SKU-less variants, published-but-out-of-stock, missing Product schema.
- No login, no cookie, nothing stored. Agents can call the same scan at /api/audit.
A snapshot cannot see Merchant Center disapprovals or ID rewrites under live ads. That is the paid half.
- Shopify Billing, 14-day trial. No Polar, no Lemon Squeezy, no extra card form.
- Coverage: products the store publishes that the channel is not holding.
- Change: offer IDs rewritten under live campaigns, silent sync stalls.
The App Store listing is not public yet (apps.shopify.com/catalog-sentry is 404). Installs go through the app host while that listing is in review.
What you are not buying
There is no $99 one-off report and no $19/mo waitlist SKU on this page. Those were a draft that never shipped. The chargeable plan that exists in the app is Catalog monitoring at $49/mo.
Connecting Google Merchant Center and Meta still needs a human signup. The free audit and the Billing trial do not.