See every competitor and reseller price change, with proof
Price Witness lives inside your Shopify admin, matches your products to competitor and reseller listings by barcode and image, and checks prices on a schedule. When a reseller advertises below your minimum, it saves a full-page, timestamped screenshot you can attach to the enforcement email.
- Automatic matching by GTIN/UPC barcode, then image and title similarity, with a review queue for anything uncertain
- Each MAP violation is stored with URL, time, price seen and a full-page screenshot hashed at capture
- Price history per product and competitor, with alerts to email or Slack when a tracked price moves
Prisync, the leading competitor-price app for Shopify, starts at $129 per month.
Source: delightchat.ioPriceMole is listed at $49 per month, and most other competitor-price apps in the category have around one review each.
Source: delightchat.ioOne expensive leader, and almost nothing credible underneath it
If you sell on Shopify, you want to know when a competitor undercuts you. If you are a brand selling through resellers, you want to know when one of them advertises below your minimum advertised price, with evidence good enough to act on, not a phone screenshot a reseller disputes a week later.
The Shopify App Store has a clear leader at $129 per month with excellent reviews, and a thin field below it where most apps have barely been used. Smaller merchants and emerging brands are left choosing between enterprise money and checking by hand.
Price Witness is the credible middle: Shopify-native, from $29 a month, with the two things that make monitoring useful rather than noisy: product matching that finds the right listing, and evidence capture built for enforcement.
Without it
- Prisync: The established leader on the Shopify App Store, starting at $129 per month, with a broad feature set including…
- PriceMole and other smaller apps: Cheaper options exist, around $49 per month in PriceMole's case, but most apps below the leader have very few users…
- Spreadsheets and manual checks: Free, and realistic for ten SKUs and two competitors. Beyond that it is a part-time job, and a phone screenshot is…
With Price Witness
- Automatic matching by GTIN/UPC barcode, then image and title similarity, with a review queue for anything uncertain
- Each MAP violation is stored with URL, time, price seen and a full-page screenshot hashed at capture
- Price history per product and competitor, with alerts to email or Slack when a tracked price moves
- Automatic product matching
- Scheduled price checks
How it works
- 1
Request service
Tell us your Shopify store URL, roughly how many products you want tracked and whether you have a MAP policy. We set up your account and send the install link within 2 business days.
- 2
Install and pick products
Install the embedded app from your Shopify admin and choose the products to track. Price Witness reads titles, barcodes and images from your catalogue.
- 3
Add competitors and resellers
Enter competitor store domains and reseller URLs. Price Witness finds matching listings by barcode first, then image and title, and queues anything it is not sure about for your review.
- 4
Checks, alerts and evidence
Prices are checked on your plan's schedule. Changes appear on the product's history chart; MAP violations create an evidence record with a screenshot and trigger an alert.
Features
Automatic product matching
Matches your products to listings on competitor and reseller sites by GTIN, UPC or EAN first, then by image similarity and title tokens. Confidence is shown, and low-confidence matches wait in a review queue for your approval.
Scheduled price checks
Daily checks on Starter, every 6 hours on Growth and hourly on Brand, per tracked URL. A failed check is shown as failed, with the reason, never as a stale price.
MAP rules per product and reseller
Set a minimum advertised price per product or variant, with per-reseller exceptions and effective dates. A price below the minimum, including after visible coupons where detectable, creates a violation.
Timestamped screenshot evidence
Each violation stores the URL, UTC time, the price seen, a full-page screenshot and a SHA-256 hash of the image so you can show the capture is unaltered. Records cannot be edited after capture.
Price history and alerts
Charts per product and competitor, exportable as CSV. Alert on any change, on undercuts beyond a percentage, or on MAP violations only, by email or Slack, instantly or as a daily digest.
Violation notices
Generate a notice to a reseller from a template you control, with the evidence record attached as PDF. We provide a starting point, not legal wording; have your lawyer review the template.
Shopify-native and read-only
Installs as an embedded app in your admin and bills through your Shopify invoice. Price Witness reads product data and never changes your prices.
A look inside
What you see day to day: the working view and the monthly summary.
Who it's for
Shopify merchants watching competitors
You compete on a few hundred SKUs with other stores. You get a daily picture of where you stand and an alert when someone moves.
Brands selling through resellers
You have a MAP policy and resellers who test it. You get violations documented with evidence that holds up in a conversation with the reseller or your distributor.
Multi-channel brands on Amazon and Google Shopping
You need marketplace listings alongside stores. Price Witness checks them, with the caveats about anti-bot measures explained in the FAQ.
Agencies managing Shopify stores
You run pricing for clients. Install per store, set alert recipients per client and export reports.
Works with
- Shopify (embedded app, product catalogue, Shopify billing)
- Competitor Shopify, WooCommerce, BigCommerce and custom stores (public product pages)
- Amazon product listings
- Google Shopping
- eBay and Walmart Marketplace listings
- Slack and email alerts
- CSV export of price history and violations
- PDF evidence packets
Pricing
Billed monthly through your Shopify invoice, cancel any time. Founding customer pricing stays fixed while the app remains installed. All plans include product matching, price history, alerts and MAP evidence capture. We onboard new accounts within 2 business days.
Starter
$29 per month
Merchants tracking up to 100 products against a few competitors
- Up to 100 tracked products
- Up to 3 competitors or resellers per product
- Daily price checks
- Barcode and image product matching
- Email alerts and price history
- MAP violation evidence with screenshots
Growth
$59 per month
Growing stores and brands with a reseller network
- Up to 500 tracked products
- Up to 10 competitors or resellers per product
- Price checks every 6 hours
- Slack alerts and daily digests
- MAP rules with per-reseller exceptions and violation notices
- CSV export
- Email support within one business day
Brand
$99 per month
Brands enforcing MAP across many resellers
- Up to 2,000 tracked products
- Unlimited competitors or resellers per product
- Hourly price checks
- Everything in Growth
- Evidence retained 36 months, with PDF packets per reseller
- Multiple staff logins
- Onboarding call to review matching
Compared with the alternatives
- Prisync
- The established leader on the Shopify App Store, starting at $129 per month, with a broad feature set including repricing. The mature choice if you need dynamic repricing across channels today; Price Witness is for merchants and brands who need monitoring and evidence at a lower price.
- PriceMole and other smaller apps
- Cheaper options exist, around $49 per month in PriceMole's case, but most apps below the leader have very few users and reviews, which makes reliability hard to judge.
- Spreadsheets and manual checks
- Free, and realistic for ten SKUs and two competitors. Beyond that it is a part-time job, and a phone screenshot is weak evidence when a reseller disputes it.
- Enterprise price intelligence platforms
- Competera, Wiser and similar platforms serve retailers with thousands of SKUs and custom integrations, with pricing to match. Right for a retail chain, more than a Shopify store needs.
What changed
- Prisync, the leading competitor-price app for Shopify, starts at $129 per month. Source: delightchat.io
- PriceMole is listed at $49 per month, and most other competitor-price apps in the category have around one review each. Source: delightchat.io
Your first week
Install, match, watch. Most stores have their main competitors matched and the first alerts set within a few days.
- Day 1: Request service; we send your install link within 2 business days.
- Day 2: Install from Shopify admin, select products, add competitor domains and reseller URLs.
- Day 3–4: Clear the match review queue, set MAP minimums and alert rules.
- Day 7: Review the first week of price history and the first evidence records; adjust thresholds.
Security and data
- Store and price data are stored on cloud servers in the United States, encrypted at rest and in transit; we read product data from Shopify and never write to your store.
- Screenshots are kept in private object storage, hashed at capture, and retained for 24 months (36 on the Brand plan) or until you delete them.
- Access is per staff login, and the store owner can revoke the app's access at any time from Shopify.
- Store data is erased on Shopify's post-uninstall request (48 hours after uninstall), and on request at any time within 30 days.
Questions
Is a MAP policy legal, and will Price Witness help me enforce it?
Price Witness documents advertised prices; it does not advise on whether your policy is lawful or enforceable. MAP policies are treated differently in different countries, with US rules on unilateral policies differing from EU and UK rules on resale price maintenance. Price Witness is software, not legal advice; have your policy and notices reviewed by a lawyer.
How accurate is the product matching?
Barcode matches are near-certain when a listing exposes a GTIN. Image and title matches carry a confidence score and go to a review queue below your threshold; approve or reject once and the match sticks. Expect a short review session when you first add a competitor.
What about Amazon and Google Shopping?
Both use anti-bot measures that can block automated checks. Price Witness checks them less often than ordinary stores and shows a failed check as failed rather than displaying a stale price. Coverage there is best-effort, and we say so.
Will the screenshots hold up as evidence?
Each capture records the URL, UTC time, the price seen and a SHA-256 hash of the full-page image, and the record cannot be edited afterwards. That is strong documentation for a conversation with a reseller or distributor; whether it meets a formal evidentiary standard is a question for your lawyer.
Does it change my Shopify prices?
No. Price Witness reads your catalogue and never writes to it. Automatic repricing is not part of early access; if founding customers want it, it would be a separate, opt-in feature.
How many products and competitors can I track?
Starter covers 100 products with up to 3 competitors each, Growth 500 with up to 10, and Brand 2,000 with no per-product limit. Each product-competitor pair is one tracked URL.
What happens if I uninstall?
Tracking stops immediately and billing ends with Shopify's cycle. Export your price history and evidence as CSV and PDF beforehand: store data is erased when Shopify sends its post-uninstall erasure request, 48 hours after uninstall.
Ready when you are
Tell us about your setup. We confirm by email and get you running within 2 business days.
Request service