Privacy policy

Last updated: 1 November 2026

Sharp Check is run by Stuart Milne, trading as Sharp Audit, in Christchurch, New Zealand. This policy follows New Zealand's Privacy Act 2020. Questions: hello@sharpaudits.com

The answer you paste

• To run a check, the text you paste is sent to Anthropic, the company behind the Claude AI. Their AI runs the four checks and writes your correction prompt.
• We don't save the text you paste. Our system keeps only counts, for example how many issues were found. It never keeps the words themselves.
• Anthropic handles the text under its business terms. Those terms don't allow it to be used to train their AI. Anthropic may keep it for a short time for safety monitoring.
• Please don't paste passwords, card numbers or anything you wouldn't want an AI service to see.

What we keep

• If you buy a pack: your email address and your check balance. We also keep a record of each payment, so that a payment can't be counted twice.
• Free checks: a random ID saved in your browser, and your IP address. We use these only to limit free checks. The daily counter linked to your IP address is deleted after 2 days.
• Check statistics: how many issues each check found, and when it ran. This contains none of your text.
• In your own browser: your random ID, email, balance and display settings. Clearing your browser data removes them.

Payments

Payments are handled by Stripe. We never see or store your card details.

Analytics and advertising

We use these tools to see which pages, videos and ads bring people to the site, and how the site is used:

• Google Analytics
• the Meta (Facebook) Pixel
• the Reddit Pixel
• Microsoft Clarity, which records clicks and scrolling. All text on the checking page is hidden from it.

These tools use cookies. You can block them with your browser settings or an ad blocker, and Sharp Check will still work.

Email

We only use your email for receipts and to restore your balance if you change device.

Who we share information with

Only the services needed to run Sharp Check:

• Anthropic (the AI)
• Stripe (payments)
• Cloudflare (runs the checking system)
• Hostinger (hosts the website)
• Google, Meta, Reddit and Microsoft (the analytics tools above)

We never sell your information.

Most of these companies are based overseas, mainly in the United States, so your information may be stored or processed there.

How long we keep it

• Email and balance: for as long as you have checks, or until you ask us to delete them. If you do, any unused checks are lost.
• Payment records: 7 years, as New Zealand tax law requires.

Your rights

You can ask to see, correct or delete the information we hold about you. We'll reply within 20 working days.

• EU and UK visitors: you have the rights set out in the GDPR, including the right to complain to your local data protection authority.
• California residents: you have the right to know, to delete and to not be discriminated against. We don't sell personal information.