Last updated: July 26, 2026

Terms of Service

These terms cover the CostSentry app for Shopify, the website costsentry.app and the free Supplier Price Margin Checker. By installing the app or using the tools you agree to them.

1. What the service does

CostSentry reads your Shopify catalog, accepts supplier price lists you upload, detects changes in supplier cost, calculates the effect on your margins, and alerts you. When you ask it to, it writes an updated cost per item back to your Shopify products. It never changes your retail prices.

2. Your account and your data

3. Accuracy, and what remains your decision

CostSentry computes margins and suggested prices from the data you give it. Those numbers are only as good as their inputs: a wrong column mapping, a price quoted per case rather than per unit, or a stale catalog will produce wrong results. We do our best to surface such problems, but pricing decisions are yours. The service is a calculation and alerting tool, not financial, accounting or legal advice.

4. Writing costs back to Shopify

Cost write-back happens either when you press the button for a specific item, or automatically if you switch auto-apply on in Settings. In both cases you are instructing us to change your Shopify data, and you accept responsibility for that change. Shopify keeps no cost history, so keep your own export before large updates — our guide explains how.

5. Availability

We aim to keep the service running continuously, but we do not promise uninterrupted availability. Scheduled syncing, alerts and delivery may be delayed by Shopify API limits, provider outages or maintenance. The service is provided “as is”, without warranties of any kind to the extent permitted by law.

6. Acceptable use

7. Plans, billing and trials

Paid plans are billed through Shopify's billing system according to the plan you choose in the app, including any trial period shown at the time. Prices may change with 30 days' notice; changes never apply retroactively to a period you already paid for. Because Shopify handles billing, cancellations and refunds follow Shopify's process and their App Store terms.

8. Cancellation

Uninstall the app at any time from your Shopify admin — that ends billing for future periods. We stop syncing immediately, and your data is erased when Shopify sends the shop-redact request 48 hours later, or sooner on request.

9. Liability

To the maximum extent permitted by law, our total liability for any claim relating to the service is limited to the amount you paid us for it in the three months before the claim. We are not liable for lost profits, lost margin, or indirect or consequential damages.

10. Changes to these terms

We may update these terms; the date at the top shows the current version. Material changes will be announced by email or in the app before they take effect.

11. Contact

CostSentry — hello@costsentry.app

CostSentry is an independent product and is not affiliated with, endorsed by, or sponsored by Shopify Inc. Distributor and brand names are used for identification only.