Privacy

Last updated 19 September 2026.

Without an account

AmpSize has no analytics and no tracking. Each calculation runs in your browser. The values you enter are in the page URL, so you can share or bookmark a result. We do not store them unless you save them to an account.

With an account

When you sign in we store your email address and, from Google, your name and profile image. We store the calculations you save, your projects, your branding details for PDF reports and any support tickets you open. We use this data only to run the service. We do not sell it or share it for marketing.

If you subscribe to Pro, Lemon Squeezy takes the payment and holds your card details. We store only your subscription status, its renewal date and a link to your Lemon Squeezy billing page. You can sign out of all devices from your account page. To delete your account and its data, email us.

Cookies and local storage

We store your light or dark theme choice in localStorage. When you sign in, we set one session cookie so you stay signed in for 30 days. There are no advertising or analytics cookies.

Services we use

Cloudflare Turnstile checks that a form is sent by a person, not a bot. Google handles Google sign-in. SMTP2GO sends our email. Lemon Squeezy handles payment. Microsoft Azure hosts the site and the database in Australia.

Hosting logs

Our host keeps standard server request logs for security and reliability. These logs include IP addresses. We do not use them to build a profile of you.

Contact

Send privacy questions to hello@ampsize.nz.