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SizeGrid: Size Chart & Finder

Privacy policy

Last updated 9 November 2026

This policy explains what information the SizeGrid: Size Chart & Finder app ("SizeGrid", "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

  • Size charts and rules you create in the app. They are saved inside your Shopify store as metaobjects and metafields that belong to your store.
  • Product information (tags, vendors, product types and collections), so you can choose which products show which chart.
  • Your store's languages, so you can translate your charts, and the translations you enter.
  • Files you choose to import. When you use "From a photo or PDF" or paste a link to one, that file is sent to our Cloudflare Worker and from there to Anthropic's Claude API, which reads the table and returns it. The file is used only for that request; we do not keep it.
  • Store settings such as which SizeGrid plan your store is on, and a count of imports used, kept per store so we can apply plan limits.

The app does not request access to customer records, orders or other personal information through the Admin API, and does not use cookies or tracking.

Shoppers and the size finder

On your storefront, the app's theme block shows the chart and an optional size finder. Measurements a shopper types into the size finder are processed in their own browser and remembered there (local storage) so they're filled in on the next product. They are never sent to you or to us.

How the information is used

Only to provide the app's features: showing charts, converting units, suggesting a size, translating charts and importing tables. 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. Charts, rules and translations live in your Shopify store. The app's admin page runs inside the Shopify admin and talks directly to Shopify. Import requests and the per-store import counter are handled by our Cloudflare Worker; the counter is kept in Cloudflare Workers KV and contains only your store's domain and a number.

Subprocessors: Cloudflare (hosting of the admin page, import requests and privacy webhooks) and Anthropic (reading imported charts). Cloudflare may keep short-lived technical logs as described in its own privacy policy. Anthropic processes imported files under its commercial terms and does not use API data to train its models.

Shopify's mandatory privacy webhooks (customer data requests, customer redaction and shop redaction) are received by the same Worker. Because the app stores no personal data, these requests are acknowledged and nothing is kept.

Billing

Subscriptions are billed through Shopify. We receive the plan your store is on, not your payment details.

Retention and deletion

You can delete charts at any time in the app. If you uninstall the app, your charts and rules stay in your store so you don't lose them; you can delete them under Content → Metaobjects and Settings → Custom data. Import counters are deleted after 40 days, or kept as a small number for Free stores. Requests to delete store or customer data that Shopify forwards to us are handled automatically.

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