Do I need Google's approval or a developer account?

No. Only a free Merchant Center account. The feed is a file Google reads from a link you give it.

How fresh is the feed?

Every fetch reads live prices and sellable stock, at most a few minutes old. Google shows what it read at its last fetch, every 24 hours by default.

Which price does Google show?

Your store's own price, so it matches the product page. When your store shows a higher was price, Google shows the sale.

Can I sell in more than one country?

Yes. Make one feed per country, each with its own language and currency.

Are demo products ever sent to Google?

Never. DEMO products only appear in the preview of a demo account.

A Google Shopping Feed Built From Live Stock

Invechar turns your catalog into a Merchant Center product feed: one private link with your live prices, your sellable stock and every detail Google uses. You add it once and Google reads it on schedule.

Exactly What Syncs With Google Shopping

Products and Attributes (Out to the Channel): Brand, GTIN, Google category, color, size, gender, age group, weights, highlights and more.
Stock (Out to the Channel): Sellable stock: on hand, less units allocated to orders, your safety reserve and units at Amazon FBA.
Prices and Sale Prices (Out to the Channel): Your store's price, so it matches the page shoppers land on, with the sale shown when your store has a higher was price.
Variants (Out to the Channel): Each variant as its own item, grouped the way Google expects.
Custom Labels (Out to the Channel): Margin band, sales speed, stock level, price band and top category, for splitting Shopping campaigns.

How You Connect Google Shopping

Open Merchant Center: Sign in to Google Merchant Center (free), verify and claim your website, and set your shipping and returns there.
Choose Where You Sell: Tell Invechar your country, language, currency and website, then create the feed.
Copy Your Feed Link: One private link that always shows live prices and sellable stock. Keep it to yourself; you can make a new one at any time.
Add the Link in Merchant Center: In Products, add a product source from a file, choose Enter a link to your file and paste it. Google fetches it every 24 hours by default, at a time you can change.
Fix What Google Would Reject: The feed report checks every product against Google's product data rules and opens the fix for each problem.
A feed is a file Google reads from a link you give it, so nothing needs Google's approval or a developer account. You can make one feed per country.

What Your Brain Does on Google Shopping

Feed Report: Every problem Google would flag, grouped, with a Fix Product button: missing product page links, invalid barcodes, images that are not on the web.
Labels from Real Economics: Custom labels come from your true margin and sales speed, so Shopping campaigns can bid on profit, not just price.
Stock Google Can Trust: A product that sells out shows as out of stock on Google after the next fetch, or leaves the feed if you choose. FBA units never count.

Good to Know

Google Shopping is a feed, not an order channel. Shoppers buy on your own website, so the orders arrive through the store you connected there.
Merchant Center fetches the feed every 24 hours by default, so Google shows what it read at its last fetch. Invechar shows when Google last fetched it.

Questions

Do I need Google's approval or a developer account?: No. Only a free Merchant Center account. The feed is a file Google reads from a link you give it.
How fresh is the feed?: Every fetch reads live prices and sellable stock, at most a few minutes old. Google shows what it read at its last fetch, every 24 hours by default.
Which price does Google show?: Your store's own price, so it matches the product page. When your store shows a higher was price, Google shows the sale.
Can I sell in more than one country?: Yes. Make one feed per country, each with its own language and currency.
Are demo products ever sent to Google?: Never. DEMO products only appear in the preview of a demo account.