Madogawa › Privacy policy

Privacy policy

Last updated: 16 Oct 2026

Madogawa ("this site") has no accounts and no forms that submit information, and does not collect personal information such as names or email addresses. This page explains what information is exchanged when you use this site.

Processed only on your device

• Stations, date and time you enter: all calculations run in your browser. What you enter is added to the end of the page address (URL) so that it is easy to share, but it is not stored on our server.
• Local storage: the browser remembers only whether the label explanation has been shown once. This is not sent to this site and can be deleted in your browser settings.

Advertising (Google AdSense)

This site shows ads from Google AdSense.

• Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this site or other websites.
• Google's use of advertising cookies enables it and its partners to serve ads based on your visits to this site and/or other sites on the Internet.
• You can opt out of personalised advertising in Google Ads Settings, and out of third-party vendors' cookies at www.aboutads.info.
• See How Google uses information from sites or apps that use its services.

Analytics

This site may use Cloudflare Web Analytics to count page views. It does not use cookies and does not collect information that identifies individuals.

Connections to external services

• Base map: the background map loads GSI Tiles directly from the servers of the Geospatial Information Authority of Japan for the area on screen. Your IP address and the map area reach those servers.
• Hosting: this site is served by Cloudflare Pages, and Cloudflare handles access records (IP address, time, browser type and so on) to deliver it.
• External links: after you open a linked source, the linked site's own policy applies.

Changes to this policy

When this policy changes, this page is updated along with the date above.