SizeCalc: Price by Size
Privacy policy
Last updated 9 November 2026
This policy explains what information the SizeCalc: Price by Size app ("SizeCalc", "the app") accesses when a Shopify merchant installs it, and how that information is used. The app is developed and operated by Serhii Tymoshyk ("we", "us"). Contact: support@storewrights.com.
Information the app accesses
- Product information in your store (product titles, images, variants and prices), so you can choose which products are priced by size.
- Size pricing settings you enter in the app (units, allowed sizes, rates, price grids). They are saved as metafields on your products, inside your Shopify store.
- Store settings needed to show prices correctly: store currency and money format, and which SizeCalc plan your store is on.
- Sizes entered by shoppers (width and height) on the product page. They are added to the cart line as line item properties and used by the app's Shopify Functions to calculate and check the price. These functions run on Shopify's platform; the sizes are not sent to us.
The app does not request access to customers, orders or other personal information, and does not use cookies or tracking on your storefront.
How the information is used
Only to provide the app's features: calculating size-based prices, checking them in the cart and at checkout, showing sizes on orders, and limiting features by plan. We do not sell, rent or share merchant or shopper information, and we do not use it for advertising.
Where it is stored
We do not run a database. Pricing settings live in your Shopify store as product metafields. The app's admin pages run inside the Shopify admin and talk directly to Shopify. When you open the app, its admin page sends a short-lived Shopify session token to our Cloudflare Worker to confirm the request comes from your store; the token is checked and discarded, not stored.
Shopify's mandatory privacy webhooks (customer data requests, customer redaction and shop redaction) are received by a small service hosted on Cloudflare Workers. Because the app stores no personal data, these requests are acknowledged and nothing is kept; their contents are not stored by us. Cloudflare may keep short-lived technical logs as described in Cloudflare's own privacy policy.
Billing
Subscriptions are billed through Shopify. We receive the plan your store is on, not your payment details.
Retention and deletion
You can remove a product's size pricing at any time in the app ("Stop pricing by size"). If you uninstall the app, it stops processing your store's data. Requests to delete store or customer data that Shopify forwards to us are handled automatically; since we hold no copies, there is nothing further to delete.
Your rights
Depending on where you live (for example under the GDPR or CCPA) you may have the right to access, correct or delete personal information. Merchants and shoppers can make such requests through Shopify or by contacting us at support@storewrights.com. We respond within 30 days.
Changes
We may update this policy when the app changes. The date at the top shows the latest version.
Contact
Serhii Tymoshyk · support@storewrights.com