Know what your competitors changed. Every day.
DeltaFetch monitors your competitors' prices, stock, and reviews across their public product pages — and sends you a clean report with every change flagged. Built for e-commerce brands.
3 competitors · 7 days · no card required
Or email us directly: contact@deltafetch.com
Set up once. Reports arrive on their own.
Pick your competitors
Tell us which 3–5 competitor brands matter to you.
We monitor daily
We track their publicly visible product pages: prices, variants, stock, new launches, and reviews.
You get the changes
A clean report — Google Sheets, Excel, CSV, or JSON — with every meaningful change flagged: price cuts, stockouts, new SKUs, review trends.
Everything that changes on a product page, tracked.
Price change alerts
Variant-level tracking: sizes, shades, bundles.
Stock & availability
Stockouts and restocks, dated.
New & discontinued products
Launches and quiet removals across the catalog.
Review intelligence
Recurring complaint and praise themes from public reviews.
This is what lands in your inbox.
| Product | Variant | Old price | New price | Change | Date observed |
|---|---|---|---|---|---|
| Competitor A — Hydrating Serum | 30ml | $38.00 | $32.00 | 15.8% | Jul 3 |
| Competitor B — Ribbed Midi Dress | Size M | $68.00 | $68.00 | No change | Jul 3 |
| Competitor C — Gentle Foaming Cleanser | 150ml | $19.00 | — | Out of stock | Jul 4 |
| Competitor A — Vitamin C Serum | 15ml | $24.00 | $26.00 | 8.3% | Jul 5 |
| Competitor D — Canvas Tote Bag | One size | $42.00 | $38.00 | 9.5% | Jul 6 |
An excerpt from a weekly report. Download a full sample report — every brand and figure in it is fictional.
Plans built around how many competitors you track.
Growth
- 5 competitors
- Daily reports
- Review monitoring
- Change alerts within 24 hours
Custom
- More competitors
- Multiple regions & marketplaces
- Custom formats & integrations
- API / JSON delivery
Prefer to just email? Send your brand name and 3 competitors to contact@deltafetch.com
Questions we get asked before signing up.
Where does the data come from?
From publicly visible product pages — the same information any shopper sees when browsing a store, tracked systematically over time. Nothing behind logins, nothing private.
How fast can we start?
First data within 48 hours of confirming your competitor list.
Which platforms can you monitor?
Any e-commerce site with public product pages — Shopify stores, custom storefronts, and most marketplaces.
Do you need access to our store?
No. We never need logins, integrations, or any access to your systems.
How are reports delivered?
Google Sheets by default; Excel or CSV on request. JSON and API delivery are part of the Custom plan. Growth and Custom plans include email alerts for significant changes.
What happens when the pilot ends?
Nothing automatic. We don't take a card for the pilot, so there's nothing to cancel and no surprise billing. If the reports are useful, pick a plan and monitoring continues without interruption. If not, we simply stop.
Can we cancel anytime?
Yes — plans are month to month. No contracts.
See what your competitors changed this week.
Start your free 7-day pilotOr email us directly: contact@deltafetch.com
Start your free 7-day pilot.
Tell us your brand and up to 5 competitors — first data lands within 48 hours.
Prefer email? Send the same details to contact@deltafetch.com