Know what sells, store by store

The SpySales Shopify sales tracker turns public storefront data into sales estimates, rankings and alerts you can act on. Here’s everything it does.

Live sales tracking

Pick any store and watch its estimated sales come in through the day. Every sale is matched to a product, so you see what is selling, not just how much.

Use it to catch a product taking off on a competitor’s store while there’s still time to act on it.

  • Product-level sales estimates
  • Hourly, daily and weekly views
  • Sales history for every tracked store
Revenue today, northfern.store$2,184+18%New saleLinen tote $486amNoonNow

Best-seller rankings

Every tracked store gets a ranked list of its best-selling products, updated continuously. Switch between the last 24 hours, 7 days and 30 days to tell steady winners from one-day spikes.

Rankings show units sold, estimated revenue and how long each product has been in the store.

  • Top products by units and revenue
  • 24-hour, 7-day and 30-day windows
  • Product age and price alongside every ranking
Best-sellers this weekUnits1Linen tote4122Canvas sneaker3183Soy candle2414Stoneware mug176

New product alerts

When a store you track adds a product, SpySales tells you. You see launches the day they go live, often before the ads and influencer posts start.

Then watch how the new product sells in its first days to judge whether it’s a quiet test or the next hit.

  • Email alerts for every new product
  • Instant alerts or a daily digest
  • First-week sales for each launch
NewTrail runner, sandloomlight.shop added it just now

Revenue estimates

Compare stores by estimated daily, weekly and monthly revenue. Size up a niche in minutes, see who leads it and follow how each store is trending.

Estimates are built from public storefront signals, so read them as direction and scale rather than exact accounting figures.

  • Daily, weekly and monthly revenue
  • Side-by-side store comparison
  • Trend lines over time
Estimated revenue, last 7 days$41.2kMTWTFSS$7.9k

Price and stock changes

Know when a competitor cuts a price, starts a sale, restocks a product or sells out. Every change is logged with a date, so you can see how pricing moves affect sales.

Use it to time your own promotions and to spot supply gaps you can fill.

  • Price drop and discount alerts
  • Restock and sold-out tracking
  • Full change history for every product
Stoneware mug$39$29−26%ChangesPrice cutJust nowRestockedYesterdayNew photos3 days ago

Store discovery

Not sure which stores to watch? Search by niche or product type and SpySales shows you active stores ranked by estimated sales.

Add any of them to your tracking list in one click.

  • Search stores by niche or keyword
  • Results ranked by estimated sales
  • One-click tracking
Est. monthly$12.4kEst. monthly$3.1kEst. monthly$28.9k

Also in SpySales

Email digests

A daily or weekly summary of everything that changed across your tracked stores.

CSV export

Take sales, best-seller and product data into spreadsheets on Pro and Agency plans.

Team seats

Share tracked stores and research with your team on the Agency plan.

Nothing to install

SpySales runs in your browser. No apps, scripts or store access needed.

Start tracking your competitors today.

Try every feature free for 7 days. No credit card required.