Independent monitoring for Shopify stores

Know the minute your store changes without you.

Apps can rewrite your prices, zero your inventory, raise their own fees, or quietly stop working — and today you find out from an angry customer or your bank statement. MerchantCanary is a read-only watchdog that tells you within minutes, with a record of exactly what changed.

$15 USD/month at launch · read-only · cancel anytime

MerchantCanarychange log · yourstore.com
01:12nightly snapshot · 412 products · all clear
02:47order flow heartbeat · ok
03:41214 prices changed by app “DHL Shipping” — e.g. Alpine Jacket $49.00$12.60
03:42alert sent → email, SMS
This wasn’t me — investigate This was me — mute 2h

This keeps happening — from public app reviews

The app changed prices for my product without warning — across all regions. Almost €1,000 in damage before anyone noticed.

1-star review · shipping app · Shopify App Store (translated)

For the price of $150, I would expect to be notified if 1/4 of e-commerce events were not tracked for the past 12 months.

1-star review · analytics app · Shopify App Store

They have tripled their price in 12 months with no warning, which no longer makes this a viable option.

1-star review · marketplace sync app · Shopify App Store

None of these merchants got an alert, because every app in a store is grading its own homework. The watchdog has to be independent.

How it works

1

Connect read-only

MerchantCanary asks for read permissions only. It cannot change a price, a product, or a setting in your store — by design, ever.

2

We snapshot everything

Prices, products, inventory, and your app charges, continuously — an independent record no app in your store can touch.

3

Change? You know in minutes

Anything moves that you didn’t do: email or SMS with the exact before/after, and one tap to mute if it was you.

What the canary catches

PRICEAlpine Jacket $49.00 → $12.60 — changed by an app, not by you
FEEApp subscription $29 → $49 — fee raised without notice
STOCKSKU BX-114 inventory 55 → 0 — zeroed outside a sale
SILENCEcontact form: no submissions in 6 days — something upstream broke quietly

One flat price

No tiers, no per-alert charges, no “that feature moved to Enterprise.” $15 USD a month, everything included — because surprise pricing is half the reason this product exists.

$15 USD /month · flat
  • Price, product & inventory change alerts
  • App fee & new-charge alerts
  • Silent-failure heartbeats
  • 90-day change log
  • Email + SMS delivery

Join the waitlist ↑