Terms of Service
Last updated: 5 November 2026
These terms apply when you install and use CostSonar on a Shopify store. By installing the app you agree to them. If you do not agree, do not install it.
Who provides the app
CostSonar is provided by Ferran Ruiz Marimon, an individual based in Spain (“I”, “me”). To reach me about these terms, write to support@costsonar.com. The app is meant for merchants using it for their business, not for personal use.
What the app does
CostSonar reads your products, prices and inventory costs from Shopify and tells you which variants sell below their cost, which have no cost set and which have a thin margin. It also records changes in cost and price, and can email you about them. It cannot change anything in your store. What it reads and stores is described in the privacy policy.
Plans and billing
CostSonar is free for now and nothing is charged. It checks your first 100 variants, with cost history and email alerts included. A paid plan may be offered later, and some of these features may become part of it. You would be told inside the app first, and you would only ever pay after approving a subscription in Shopify.
What I promise, and what I do not
I build the app with care and test it, but it depends on the data Shopify gives it. In particular:
- The figures are only as good as the costs and prices stored in your Shopify store. If a cost is missing or wrong there, it will be missing or wrong here.
- Alerts and scans can arrive late or, rarely, not at all, for example if Shopify does not deliver a notification or the service is down. Do not rely on CostSonar as your only safeguard against selling at a loss.
- The app is a tool for information. It is not accounting, tax or financial advice, and the decisions you make about your prices are yours.
- The app is provided “as is”. I aim to keep it running around the clock but I do not guarantee uninterrupted service.
Limit of liability
To the extent the law allows, I am not liable for lost sales, lost profit, or indirect damage arising from the use of the app, including any product sold below cost. My total liability for any claim is limited to the amount you paid for the app in the twelve months before the claim. Nothing in these terms limits liability that the law does not allow to be limited.
Acceptable use
Do not try to break, overload or reverse-engineer the service, use it to access data that is not yours, or resell it. I can suspend access to a store that does, and I will say why.
Ending the relationship
You can stop at any time by uninstalling. When Shopify sends the deletion notice, 48 hours after the uninstall, your data is deleted as the privacy policy describes. I may stop offering the app; if so, I will give notice inside the app and, if you pay, you will not be charged for any period after it ends.
Changes to these terms
If these terms change in a way that matters, I will say so inside the app and update the date at the top. Using the app after that means you accept the new terms.
Law and disputes
These terms are governed by Spanish law. If we cannot settle a disagreement by talking, the courts of Spain have jurisdiction, without prejudice to any rights you have as a merchant in your own country that cannot be waived.