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Privacy

Last updated 4 October 2026

Contents

1Who we are

papergrinder (papergrinder.com) decides how your data is used. For any question or request, email hello@papergrinder.com.

2What we collect

  • Without an account: your practice stays in your browser. We receive your searches, any photos you upload, and basic request details like your IP address.
  • Your account: your email address, and your name and picture if you sign in with Google. With an email code, your name starts as the part of your email before the @. You can change it in Settings.
  • Your practice: what you type, draw and photograph, and your marks, collections and progress.
  • Devices: the kind of device and browser you sign in on, when each was last used, your IP address, and a random id for each browser, kept for 30 days after last use.
  • Payments: your plan and its dates. Card details go to our payment provider and never reach us.
  • Referrals: your link code, and whose shared link brought you to papergrinder.
  • Messages: what you send from Contact us or Report, with any attachments, the page you were on, and your email if you leave one.
  • Usage statistics: how papergrinder is used. To opt out, email us.
  • Errors: technical details when something breaks.

3Why we use it

To run your account, mark and sync your work, and provide Pro. To keep papergrinder safe and affordable, with limits on AI marking, the device limit and checks against abuse. To fix and improve papergrinder, and to email you.

We don't sell your data, show ads or use your work to train AI.

4Emails

We email you sign-in codes, messages about your account, and news and offers from papergrinder. Receipts for payments come from our payment provider.

5Who we share it with

We use service providers to host papergrinder, store data, send email, take payments, mark answers with AI, track errors and measure usage. Each gets only what it needs to do that, under data processing terms.

If you arrive from one of our ads, we tell that ad platform when you sign up, get your first mark and start Pro, with your IP address, browser and a hashed copy of your email, so we can tell which ads work.

Anything you share shows your first name to whoever opens it.

6Where it is stored

Your data is stored in the EU and encrypted when stored. Some providers process data in other countries under approved transfer terms.

7How long we keep it

  • Account and practice data: until you delete your account.
  • Practice in your browser: until you clear your browser's site data.
  • Photos: 90 days.
  • Request logs: 7 days.
  • Usage statistics: up to a year.
  • Backups: up to 30 days after you delete your account.
  • Payment records: as long as tax law requires.

8Your rights

You can ask to see, correct, download or delete your data, or object to how it's used. Email hello@papergrinder.com from your account's email address. Deleting your account deletes your data. We reply within a week. You can also complain to the Information Commissioner's Office at ico.org.uk.

9Browser storage

Your browser's storage keeps you signed in, holds your practice and settings on this device, and keeps a random id for usage statistics.

Signing out clears your practice from the browser but keeps your settings and any changes not yet saved. Practice done without an account joins the next account that signs in on that browser, so clear the site data when you finish on a shared computer.

10Children

You must be 13 or over to make an account. Keep names and faces out of photos of your work. We aren't responsible for personal details you include in uploads.

11Changes

When this page changes, the date at the top changes too. Account holders are told about major changes.