Privacy policy
SizeSheet: Size Chart & Guide (“the app”, “we”) adds size charts to Shopify stores. This policy explains what information the app accesses and stores when a merchant installs it. Last updated: October 22, 2026.
Information the app accesses
When you install the app, Shopify gives it access to:
- Products (read only): titles, product types, tags, vendors and collections, used to match size charts to products.
Your size charts are saved in your own store as Shopify metaobjects that belong to the app (this needs no extra access). You can see them in Shopify admin → Content → Metaobjects and export them to CSV from the app.
The app does not access orders, customers, payments or any personal information of your shoppers.
Information we store
On our server we keep only what the app needs to run:
- your store’s Shopify domain and the access token Shopify issues to the app;
- your current plan (Free or Pro) as confirmed by Shopify, and technical counters used to keep your storefront charts up to date.
Our hosting provider keeps short-term server logs (for example, your store domain and error messages) for troubleshooting. We do not sell or share this information and we do not use it for advertising.
Your shoppers
The size chart on your storefront is shown from data stored in your store. It does not send any information to our server, does not use cookies and does not track shoppers. It remembers the shopper’s chosen unit (cm or inches) in their browser’s local storage.
Import from Kiwi Size Chart
If you choose to import charts from Kiwi Size Chart, the app sends your store domain and the product details listed above (ID, title, type, tags, vendor and collection IDs) to Kiwi’s API to receive your existing charts. This happens only when you start an import. Kiwi’s own privacy policy applies to that service.
Service providers
- Shopify — the platform the app runs on, including billing for paid plans.
- Fly.io — hosts the app’s server and database (United States).
Retention and deletion
When you uninstall the app, Shopify revokes its access tokens right away, so they no longer work. About 48 hours later Shopify sends a shop data deletion request, and we then delete the tokens and all remaining information about your store from our database. Daily backups of the database are kept by our hosting provider for 5 days, and server logs expire on its schedule.
Size charts are stored in your store as metaobjects that belong to the app. After you uninstall the app, Shopify decides whether they are kept or removed, so to keep a copy, use Export all (CSV) before uninstalling.
Because the app stores no shopper data, customer data requests and deletion requests from Shopify have no shopper data to return or delete.
Your rights
You can ask what information we hold about your store, or ask us to delete it, by writing to plainkit.apps@gmail.com. If you are in the EEA, the UK or another region with data protection laws, you may also have the right to correct your data, restrict or object to its processing, and complain to your local data protection authority.
Changes
If we change this policy, we will update the date above. Significant changes will be announced in the app.
Contact
Questions about privacy: plainkit.apps@gmail.com.