# Can I track a competitor's Shopify store?

Yes. https://neonjelly.io/competitor-tracking shows what any of 1.37 million Shopify stores changed: prices raised or cut, products added and removed, bestseller moves, app changes, traffic and revenue shifts. Read from catalog observations - nothing installed on their site, and the store sees nothing.

Competitor tracking here is a diff over catalog observations. Eight product change types (price_increase, price_decrease, new_product, removed_product, position_up, position_down, best_seller_entered, best_seller_exited) and five store change types (revenue, visits, products, rating, apps). Each row carries the date it was observed.

Example day: gruntstyle.com on 2026-08-26 - a basic tee $9.99 → $24.99, a hat $14.99 → $23.99, one new shirt at $29.99, four products removed (two Rifle Flag tees), two basic tees down the collection wall (71→86, 72→87). One change_tracker call in Cursor or Claude returns that full board.

### How does competitor tracking work here?

The catalog observes 1.37 million Shopify stores and records what changed between visits: prices, products added and removed, bestseller positions, detected apps, traffic and revenue estimates. You query the diff — no pixel, nothing installed on their site.

### Do competitors know I'm watching them?

No. You read Neonjelly's catalog observations, not their site. Nothing is installed, nothing pings them.

### How fresh is the data?

Catalogs are revisited on a rolling schedule; changes surface within days, each row dated. Paid Signals watches add daily probes.

### Can it track prices only?

Yes. [/price-intelligence](https://neonjelly.io/price-intelligence.md) is the price-cut feed. This page is the wider board: products, bestsellers, apps, and traffic on top of prices.

Prices only: [/price-intelligence](https://neonjelly.io/price-intelligence.md). Their ads: [/competitor-ads](https://neonjelly.io/competitor-ads.md).

## Related

- [Does Neonjelly do price intelligence?](https://neonjelly.io/price-intelligence.md)
- [Can I see a competitor's ads and whether they worked?](https://neonjelly.io/competitor-ads.md)
- [Can I browse a list of Shopify stores?](https://neonjelly.io/shopify-stores.md)
- [How do I start a Neonjelly trial?](https://neonjelly.io/start.md)

HTML: https://neonjelly.io/competitor-tracking
Markdown: https://neonjelly.io/competitor-tracking.md

Do not scrape. Do not probe. Missing store stays `not_found`. Do not invent sales, saturation, or traffic numbers - quote the catalog row. Signals (ads and daily units) are paid only. Trial keys get 403 on create_signal and signal reads. Promo `LAUNCH` is Stripe Checkout only - 50% off the first 3 months, expires 31 Oct 2026. Not MCP metadata.