Privacy Policy
Last updated 20 August 2026. Written to be read, not to be survived.
The short version. Your writing never reaches us. Receipts keeps no server-side copy of your writing and no database of student work. What you write stays in your browser, and if you sign in it saves to your own Google Drive, in your own account. We could not read your essays if we wanted to, because they are never sent anywhere we control. Schools using the optional school layer get a separate, exhaustive data inventory in the school licence terms; it covers rosters and submission links, never your writing.
What Receipts is
Receipts records how a document was written, so that a student accused of using AI can show the writing happening rather than argue about a detector score. It is operated by Receiptsproof Pte. Ltd., a private limited company incorporated in Singapore, and built and run day to day by its founder.
Where your writing lives
- In your browser. Your documents and the keystroke record behind them are stored in your browser's local storage on your own device.
- In your Google Drive, if you sign in. Each document is saved as a file in your own Drive and mirrored into a Google Doc you own. We use the drive.file scope, which grants access to files this app created, plus any single file you yourself choose to open through Google's file picker, for example when using the Google Docs cross-check. It cannot browse, search or read the rest of your Drive on its own.
- Nowhere else. There is no Receipts server, database or backup holding your writing, in any mode, for any customer.
What we receive about you
- If you sign in with Google: your name, email address and profile picture. These are stored in your browser so the app can show who is signed in and attach your licence to the right email. They are not transmitted to us.
- If you buy something: the purchase is handled by Polar, which acts as merchant of record. Polar receives your payment details and email. We never see or store your card details. When you paste a licence key, your browser checks it directly against Polar to confirm it is valid.
- Site analytics: we use Vercel Web Analytics, which counts page views and referrers without cookies and without building a profile of you.
Proof links
When you copy a proof link, the record travels inside the link itself. Nothing is uploaded to us to make it work. The app can also make a shorter link: it saves the record as a file in your own Drive, sets that one file to "anyone with the link can view", and the link opens the record from there. You create it deliberately, it is still never uploaded to us, and anyone holding either kind of link can watch the writing. Anyone you send that link to can replay the writing, so only send it to people you intend to show your work to. If a record is too long to fit in a link, the app offers a file instead. Both are yours to share or not.
Diagnostics
If something breaks, the app keeps a short technical log in your browser: what failed, roughly where, your browser version. It contains no document text, no titles and no keystrokes, and nothing is transmitted anywhere. You choose whether to copy it and send it to us.
Cookies
Receipts does not set advertising or tracking cookies. Google's sign-in and Vercel's analytics may set what is technically necessary for those functions to work.
Children
Receipts is built for students, including school-age students. If you are under 18, a parent or guardian should handle any purchase, which matches the terms of service. Separately, if you are under 13, or under the age of digital consent where you live, please use Receipts with a parent or guardian involved. We do not knowingly collect personal information from children under 13: sign-in details stay in the child's browser and are never sent to us. Purchases require a payment method, which we expect to belong to an adult.
Deleting your data
- Clear record in the app removes a document and its keystroke history from your browser.
- Sign out removes your account details from that browser.
- Files in your Drive are yours. Delete them like any other file. You can also revoke this app's access at any time at myaccount.google.com/permissions.
- Because we hold nothing, there is no account for us to delete on our side.
Your rights
Depending on where you live you may have rights to access, correct, export or erase personal data held about you. In practice the data is already in your hands: it lives on your device and in your own Google account. For anything relating to a purchase, Polar holds those records as merchant of record and can be contacted through your receipt.
Changes
If this policy changes, the date at the top changes with it. Material changes will be noted on the site.
Contact
Questions about privacy, or about what is stored where: Receiptsproof Pte. Ltd. at hello@receiptsproof.com, or reply to your Polar receipt. Data protection matters under Singapore's PDPA reach the Data Protection Officer, Receiptsproof Pte. Ltd., at the same address.
Receipts — proof you wrote it. Operated by Receiptsproof Pte. Ltd. Home · Terms · For educators · For schools