Plainstack

Privacy policy

Last updated: November 10, 2026

Plainstack makes Shopify apps. This policy covers the Plainstack: Volume Discounts app ("the app") and this website. It explains what we store, why, and how it is deleted. It applies to merchants who install the app, to shoppers who visit stores that use it, and to visitors of this website.

What the app stores

  • Your shop domain (for example your-store.myshopify.com), to know which store the data belongs to.
  • An access token from Shopify and the permissions you granted, so the app can manage its discounts in your store. It is stored on our server and never shown to anyone.
  • A copy of your offer settings: offer names, type, tiers, tier names and badge text, selected product and collection IDs, schedule, status and combination settings. The same settings are saved in your Shopify store on the discounts the app creates; our copy powers the offer list in the app.
  • A record for your store: the date you installed the app, whether you installed during early access (which keeps the app free for you), the last time we asked Shopify to show you a review request, and whether you finished or hid the getting-started checklist.
  • Technical logs kept by our hosting provider (Hetzner Online GmbH), such as IP address and request time, used only for security and troubleshooting.

What the app does not store

  • No personal data of your customers: no names, emails, addresses, phone numbers or orders.
  • No names or email addresses of you or your staff.
  • No cart contents. Discounts are calculated by Shopify at checkout, so carts are never sent to our servers.
  • No payment details. Any charges are billed by Shopify; we never see card or bank details.
  • The product page block reads offer settings from your store. It sets no cookies, does no tracking and sends no shopper data to us.

Shopify permissions

  • write_discounts: create, update, pause and delete the automatic discounts that run your offers.
  • read_products: let you pick products and collections and show their names in the app.

The app does not request access to orders or customers, so Plainstack can't see them.

Uninstall and deletion

  • When you uninstall, Shopify deletes the app's discounts and removes the product page block from your theme, so no offer keeps running. We delete your access token and our copy of your offers right away.
  • 48 hours after uninstall, Shopify sends us a shop/redact request and we delete everything else we hold for your store, including the record that you installed during early access. If you reinstall after that, the app treats your store as new; write to us and we'll sort out your early-access status.
  • Customer data requests from Shopify (customers/data_request and customers/redact) are answered, but we hold no customer data to return or delete.
  • You can ask us to delete your store's data earlier by emailing us from the store owner's address.

Waitlist emails (this website)

  • What: if you join the waitlist, we store your email address, which page you signed up on, and the date.
  • Why: to email you when the app is in the Shopify App Store and when a new Plainstack app launches. We don't use it for anything else, and we never sell or share it.
  • Where: in the app's database at our hosting provider (Hetzner Online GmbH). We send these emails from support@plainstackapps.com. If we ever use an email-sending service, we will name it here before we use it.
  • Leaving the list: reply to any of our emails or write to support@plainstackapps.com from that address, and we delete it, at the latest within 30 days. Waitlist addresses are not Shopify data, so uninstalling the app doesn't remove them; ask us instead.

This website

The website uses no cookies, no analytics, no trackers and no third-party scripts or fonts. Our website host (Hetzner Online GmbH) keeps standard server logs, such as IP address and pages requested, for security and troubleshooting.

Sharing

We do not sell or rent data, and we do not share it with advertisers. Data is processed only by Shopify and by our hosting provider (Hetzner Online GmbH) to run the app and this website.

Security

All traffic to the app and this website uses HTTPS. Access to our database is limited to the app and its developer.

Your rights

You can ask what data we hold about you, ask us to correct it, or ask us to delete it. Email support@plainstackapps.com; we reply within 24 hours.

Changes

If this policy changes, we update this page and the date at the top.

Contact

Questions or requests about your data: support@plainstackapps.com.