Privacy Policy

Effective 17 October 2026

This policy explains what information j1pro.in ("J1 Pro", "we") collects and how it is used. It applies to this website. The J1 Pro Android app has its own privacy policy, linked from its Google Play listing.

Calculator inputs

The calculators run entirely in your browser. Values you enter, saved projects and settings are stored only on your own device (browser local storage) and are not sent to us. Reports (PDF and Excel) are generated in your browser. You can clear this data at any time through your browser settings.

Contact form

If you use the contact form, we receive the name, email address and message you submit, and whether you opted in to updates. We use them only to reply to you and, if you opted in, to send occasional updates. You can ask us to delete your message or unsubscribe at any time through the contact form. Form submissions are processed by our hosting provider, Netlify.

Hosting and logs

The site is hosted by Netlify, which processes standard technical data such as IP address, browser type and requested pages to deliver and secure the site.

Visitor statistics

We use Cloudflare Web Analytics, which counts visits anonymously without cookies.

Advertising and cookies

We may show ads served by Google AdSense. Third-party vendors, including Google, use cookies to serve ads based on a user's prior visits to this website or other websites. Google's use of advertising cookies enables it and its partners to serve ads to users based on their visits to this site and/or other sites on the Internet.

You can opt out of personalised advertising in Google Ads Settings.
You can opt out of some third-party vendors' use of cookies for personalised advertising at www.aboutads.info.
Learn how Google uses information from sites that use its services: How Google uses information from sites or apps that use our services.

Visitors from the European Economic Area, the UK and Switzerland are shown a consent message, provided through Google, before personalised ads are used.

Children

This site is intended for engineers and students and is not directed at children under 13.

Changes

We may update this policy. The effective date above shows the latest version.

Contact

For any privacy question, use the contact form.