# Shopify Google Shopping feed apps: build, then watch

> Six Shopify feed apps compared from their App Store listings on 2026-09-29: what each builds and submits, what it costs, and who watches the feed afterwards.
> Facts checked: 2026-09-29 · Updated: 2026-10-01
> Canonical: https://rabbot.ai/compare/google-shopping-feed-apps-shopify/
> Tags: compare, shopify, feeds

---

A feed app builds, maps and submits your product feed to Google Merchant Center and Meta. What happens after submission is a different job: disapprovals, price and availability mismatches, missing GTINs, rejected items. That is the job Rabbot does. On paid plans it connects to Google Merchant Center and Meta and notifies you when a product is disapproved or rejected. It also cross-checks the feed against the live storefront every day, price, availability, GTIN, brand and missing data, and flags each gap as disapproval risk. TikTok (Beta) catalog diagnostics are read daily on paid plans. The free plan runs the cross-check once, on install.

Feed apps build. Rabbot watches.

Rabbot does not build a feed, so it is not a substitute for any feed app below. It sits beside the feed app you pick, from $19 a month, and covers the step after the feed goes out.

The short list by job:

- Build and submit a Google feed: Simprosys, Nabu for Google Shopping Feed, DataFeedWatch, GoDataFeed, Feedonomics for Advertising.
- Build a Meta catalog feed: Flexify, Simprosys, DataFeedWatch, GoDataFeed, Feedonomics for Advertising.
- Know when a product is disapproved or rejected: Rabbot, on paid plans.
- Know when your feed disagrees with your storefront: Rabbot, on paid plans.

Apps that edit your pages rather than your feed are in [the Shopify SEO apps roundup](/compare/best-shopify-seo-apps/).

## How we compared

Every competitor fact comes from the app's own Shopify App Store listing, fetched on 2026-09-29. Review counts, ratings and prices are as the listing showed them that day, in USD. Quotes are verbatim. When a listing does not mention something we write "not described", which is not the same as "cannot do it". There are no affiliate links. Rabbot is our product. It is in the list as the watcher, not as a feed builder, so read our entries with that in mind and check the caps we state on ourselves.

Several App Store listings carry category tags such as "Error validation" and "Performance monitoring". We list a tag only when it is the listing's sole statement, and we mark it as a tag. We do not count a tag as a described feature.

## The apps at a glance


![Dot plot of six Shopify feed apps and Rabbot by job and cheapest paid plan in USD per month: builds and submits, Simprosys ($4.99), Flexify ($29), GoDataFeed ($39), AdNabu ($39.90), DataFeedWatch ($64), with Feedonomics shown apart as no fixed price on the listing; watches after submission, Rabbot ($19); from App Store listings checked 2026-09-29.](/img/compare/google-shopping-feed-apps-shopify/1-jobmap.png)
| App | Job | Channels named on the listing | Cheapest paid tier | Reviews (rating) | Errors, disapprovals or alerts, as the listing states it | Listing |
|---|---|---|---|---|---|---|
| Simprosys Google Shopping Feed | builds and submits | Google Shopping, Microsoft, Meta, Pinterest, 15+ platforms | Up to 500 Products $4.99/mo | 4,892 (4.9) | not described (category tag "Error validation") | [link](https://apps.shopify.com/google-shopping-feed) |
| Nabu for Google Shopping Feed (AdNabu) | builds and submits | Google Merchant Center, YouTube, marketplaces | Grow $39.90/mo (Explorer free to install) | 538 (4.7) | "Resolve Google Merchant Center Errors with automated suggestions and scores." | [link](https://apps.shopify.com/google-shopping-feed-2) |
| DataFeedWatch | builds and submits | Google Shopping, Facebook, Pinterest, TikTok, 2k+ more | Shop Plan $64/mo | 339 (4.7) | "find and fix errors" | [link](https://apps.shopify.com/datafeedwatch) |
| Flexify: Facebook Product Feed | builds and submits | Meta (Facebook and Instagram) | Premium - SMALL $29/mo (free tier exists) | 154 (4.4) | not described (category tag "Error validation") | [link](https://apps.shopify.com/facebook-product-catalog) |
| Feedonomics for Advertising | builds and submits | Google Shopping, TikTok, Meta, Microsoft, Pinterest, hundreds more | none fixed ("Free to install", additional charges may apply) | 0 (none yet) | "minimizes errors" | [link](https://apps.shopify.com/feedonomics-catalog-connector) |
| GoDataFeed | builds and submits | Google, Meta, Amazon, TikTok, 200+ channels | Lite $39/mo | 28 (4.8) | not described (category tag "Error validation"); lists "feed quality analysis and optimization recommendations" | [link](https://apps.shopify.com/godatafeed) |
| Rabbot | watches after submission | Google Merchant Center, Meta, TikTok (Beta) | Starter $19/mo | none yet | paid plans: notifies you when a product is disapproved or rejected | [link](https://apps.shopify.com/rabbot) |

Shoppingfeed is not listed on the Shopify App Store (the listing slug returned a 404 on 2026-09-29), so it is not in the table. Feedonomics also has a second listing, Feedonomics Listing & Orders, which states it is not currently available.

## Pick by job

**Single-channel Google.** Nabu for Google Shopping Feed builds a Google Shopping feed and syncs to Google Merchant Center and YouTube. Its Explorer tier is free to install for up to 10 orders a month and lists "Merchant Center Analytics". Simprosys, DataFeedWatch and GoDataFeed also name Google. Rabbot watches the Google feed after it goes out: on paid plans it connects to Google Merchant Center and notifies you when a product is disapproved or rejected ([Google channel](/docs/feeds/google-channel/)).

**Google plus Meta.** Simprosys names Google Shopping, Microsoft and Meta. DataFeedWatch names Google Shopping, Facebook and TikTok. GoDataFeed names Google, Meta and TikTok. Rabbot's Starter plan watches one channel, Growth up to three, Pro all of them ([Meta channel](/docs/feeds/meta-channel/)).

**Meta only.** Flexify's listing is about the Meta product feed: categories, titles, images, languages, currencies and product sets. It has a free tier for up to 1,000 products.

**Multi-channel and marketplaces.** GoDataFeed lists "200+ channels" including Amazon. DataFeedWatch lists "over 2k more" and Feedonomics for Advertising lists "hundreds". Nabu lists "2000+ Marketplaces" for XML feeds. Rabbot does not submit to any channel.

**Agencies and large catalogs.** DataFeedWatch's Agency plan lists 30,000 SKUs, 150 channels and unlimited shops at $239/mo. GoDataFeed's Premium lists 40,000+ SKUs at $399/mo. Feedonomics for Advertising lists "Dedicated onboarding and support from feed experts" and a demo request in place of a price. Rabbot's Pro plan monitors up to 15,000 URLs at $79/mo.

**Knowing when a product is disapproved or out of sync.** DataFeedWatch lists "Automatically pause low or out-of-stock products to stop wasted ad spend". That acts on stock inside your feed. On paid plans Rabbot compares feed availability with what the live product page shows every day and flags a mismatch as disapproval risk, and it connects to Google Merchant Center and Meta and notifies you when a product is disapproved or rejected. None of the six feed listings describes alerts on disapprovals (checked 2026-09-29).

## The apps, one at a time

**Simprosys Google Shopping Feed.** Submits feeds to Google Shopping, Microsoft and Meta, with feed rules, bulk editing, metafield mapping and Performance Max campaign setup. Tiers scale by product count from $4.99/mo (up to 500 products) to $17.99/mo (5,001 to 10,000); a 21-day free trial is listed. 4,892 reviews, 4.9. The listing does not describe disapproval alerts. [Rabbot vs Simprosys](/compare/rabbot-vs-simprosys/).

**Nabu for Google Shopping Feed.** Builds Google feeds with AI optimisation, feed rules and metafields, and lists "Resolve Google Merchant Center Errors with automated suggestions and scores." Explorer is free to install, then $19.99/mo above 10 orders; Grow $39.90/mo; Advanced $99.90/mo; Plus $249.90/mo. 538 reviews, 4.7. Developer: AdNabu Global, Inc. [Rabbot vs AdNabu](/compare/rabbot-vs-adnabu/).

**DataFeedWatch.** A feed management platform with templates, AI optimisation of titles and categories, custom labels and an "Automatic feed review". Shop Plan $64/mo (1,000 SKUs, 3 channels); Merchant $84/mo; Agency $239/mo; Enterprise $599/mo; 15-day free trial. 339 reviews, 4.7. [Rabbot vs DataFeedWatch](/compare/rabbot-vs-datafeedwatch/).

**Flexify: Facebook Product Feed.** Builds a Meta product feed and integrates with Shopify's Facebook and Instagram sales channel or runs as the primary integration. Free-Forever tier (1,000 products, 24-hour sync); Premium from $29/mo to $79/mo; 30-day free trial. 154 reviews, 4.4. [Rabbot vs Flexify](/compare/rabbot-vs-flexify/).

**Feedonomics for Advertising.** Connects your catalog to hundreds of advertising channels with AI categorisation and data transformations. Free to install; the listing says additional charges may apply and points to a demo request. It launched on the App Store on September 10, 2025 and shows no reviews yet. [Rabbot vs Feedonomics](/compare/rabbot-vs-feedonomics/).

**GoDataFeed.** Click-to-connect feeds for 200+ channels with feed quality analysis and a managed-service option. Lite $39/mo (1,000+ SKUs, 1 PPC channel) to Premium $399/mo; extra channels and marketplaces are priced per add-on; 14-day free trial. 28 reviews, 4.8. [Rabbot vs GoDataFeed](/compare/rabbot-vs-godatafeed/).

**Rabbot.** Rabbot watches your feed after it goes out. On paid plans it connects to Google Merchant Center and Meta and notifies you when a product is disapproved or rejected, and it cross-checks the feed against the live storefront every day and flags price, availability, GTIN, brand and missing-data gaps as disapproval risk ([what feed monitoring is](/docs/feeds/what-feed-monitoring-is/), [feed alerts](/docs/feeds/feed-alerts-and-disapproval-risk/)). TikTok (Beta) catalog diagnostics are read daily on paid plans ([TikTok channel](/docs/feeds/tiktok-channel-beta/)). Free: 20 URLs, checks at least weekly and a one-time feed cross-check on install, no channel connections. Starter $19/mo (one channel), Growth $39/mo (up to three), Pro $79/mo (all channels), daily checks. Rabbot does not build, map, optimise or submit a feed, runs no campaigns, and has no reviews yet.

## Which one for which store


![Bar chart of the cheapest paid plan for Simprosys ($4.99/mo), Rabbot ($19/mo), Flexify ($29/mo), GoDataFeed ($39/mo), AdNabu ($39.90/mo), DataFeedWatch ($64/mo), and Feedonomics with no fixed price on the listing, from App Store listings checked 2026-09-29.](/img/compare/google-shopping-feed-apps-shopify/2-pricing.png)
- One Google Shopping feed, small catalog: a Google feed app from the table, plus Rabbot's free plan to run the one-time cross-check on install.
- Store selling on Meta: Flexify for a Meta-focused feed, or a multi-channel app that names Meta. Add Rabbot's Meta channel on a paid plan to hear about rejected items.
- Google and Meta from one app: Simprosys, DataFeedWatch or GoDataFeed name both. Rabbot Growth watches up to three channels.
- Marketplaces beyond Google and Meta: GoDataFeed, DataFeedWatch, Nabu (XML feeds) or Feedonomics for Advertising list them. Rabbot does not submit to marketplaces.
- Agency or large catalog: a plan sized to your SKU count from DataFeedWatch or GoDataFeed, or a Feedonomics demo, and Rabbot Pro for daily cross-checks across all channels.
- A feed that has drifted from the storefront before: any feed app plus Rabbot on a paid plan. The cross-check compares feed price and availability with the page every day.

## FAQ

**Do I need a feed app and Rabbot?**
Yes if you sell through Google Shopping or Meta and you want both jobs covered. The feed app builds and submits the feed. On paid plans Rabbot connects to Google Merchant Center and Meta, notifies you when a product is disapproved or rejected, and cross-checks the feed against your live storefront every day. Rabbot does not build a feed, so it does not replace a feed app.

**What does a Google Shopping feed app do?**
It turns your Shopify product data into the feed format a channel expects, applies rules and mappings, and submits it. Each listing above names its channels.

**Why do products get disapproved in Merchant Center?**
Rabbot's docs describe one family of causes: the product data in your feed and the page a shopper lands on disagree. The fields are price, availability, required identifiers such as the barcode number, and missing or empty product data. Usual sources are a stale sync, a manual price edit, or an app that stopped updating stock. Rabbot flags these as disapproval risk, a warning rather than a verdict. For Google's own rules, read Google's Merchant Center help pages.

**What is misrepresentation?**
It is Google's term, and Google's own Merchant Center help pages define it, so read the definition there. Rabbot does not review your store against that policy. It flags feed and storefront gaps such as price and availability mismatches, and it notifies you when Google disapproves or rejects a product.

**How does Rabbot tell me a product was disapproved?**
On a paid plan, add the Google or Meta channel in Settings. On paid plans Rabbot connects to Google Merchant Center and Meta and notifies you when a product is disapproved or rejected. Verdicts are pulled daily and appear in your dashboard and weekly digest. TikTok (Beta) catalog diagnostics are read daily on paid plans.

**What does Rabbot cost?**
The free plan is $0: 20 URLs, no card, a day-0 audit and a one-time feed cross-check on install. Channel connections and continuous feed monitoring are on paid plans: Starter $19/mo for one channel, Growth $39/mo for up to three, Pro $79/mo for all.

**Can Rabbot fix a disapproved product?**
No. It tells you which product and which field disagree. You fix the source, and the finding clears when the next cross-check sees the feed and the page agree.

## Sources

- Simprosys: https://apps.shopify.com/google-shopping-feed (fetched 2026-09-29)
- Nabu for Google Shopping Feed: https://apps.shopify.com/google-shopping-feed-2 (fetched 2026-09-29)
- DataFeedWatch: https://apps.shopify.com/datafeedwatch (fetched 2026-09-29)
- Flexify: https://apps.shopify.com/facebook-product-catalog (fetched 2026-09-29)
- Feedonomics for Advertising: https://apps.shopify.com/feedonomics-catalog-connector (fetched 2026-09-29)
- Feedonomics Listing & Orders: https://apps.shopify.com/feedonomics-listing-orders (fetched 2026-09-29)
- GoDataFeed: https://apps.shopify.com/godatafeed (fetched 2026-09-29)
- Shoppingfeed: https://apps.shopify.com/shoppingfeed (404, fetched 2026-09-29)
- Rabbot: https://apps.shopify.com/rabbot (fetched 2026-09-29)

Facts about each app were checked on 2026-09-29. Tell us if something changed.

Rabbot's free plan: 20 URLs, no card, a day-0 audit and a one-time feed cross-check on install. [Start free on the App Store](https://apps.shopify.com/rabbot).