What Feed Doctor does well
Feed Doctor connects to your Merchant Center account to read the actual disapprovals Google reports, explains each one, and applies reviewed fixes to products inside Shopify admin. If you want the app to fix things for you on Shopify, that is the tool, and it does something a read-only checker cannot.
Where a Shopify-only app stops
It is Shopify-only, so a WooCommerce, Wix or custom store cannot use it. It needs an install and a subscription. And because it reads your store from the Shopify side, it does not show what an outside crawler actually receives — the block or 500 that a bot gets while your browser sees a perfect page.
What Shipwork does instead
- Free and no install, on any platform, not just Shopify.
- A feed-file check for GTIN, google_product_category, condition and identifier_exists — the fields a public catalogue hides.
- Outside-network checks: reachability, AI crawler access, TLS, DNS and Merchant Center disapprovals (read-only connection).
- A daily watch that records the day a check changes.
Which should you use?
Use Feed Doctor if you want in-admin fixes and a Merchant Center connection on Shopify. Use Shipwork for a free, any-platform first pass, to validate a feed file, and to watch a store over time.