Privacy Policy

Who we are

Zenkaku ("we") is operated by Koki Nagai, Tokyo, Japan. You can reach us at hello@zenkaku.dev.

What we collect

When you submit a form on this site, we collect the information you enter: Your name, Work email, Company, Your role, Product URL, How important is Japan to you right now?, Which flows matter most?, How do you check Japanese today?, How often do you release?, When would you like to start?, Anything else I should know?.

With each submission we also record the page you arrived on, the referring page, campaign parameters in the link you used (such as utm_source and ref), and your country as estimated from your IP address. We do not store your IP address.

Our forms are protected by Cloudflare Turnstile, which checks your browser for signs of automated abuse.

Why we use it

We use this information to respond to your request, to contact you about Zenkaku, and to understand interest in Zenkaku so we can improve it. We do not sell your information or use it for advertising.

We rely on your request when we respond to it, and on our legitimate interest in running and improving Zenkaku for the rest.

Where it is stored

This site and its database are hosted on Cloudflare (Cloudflare, Inc., United States), which may process data outside your country. We also email a copy of each form submission to ourselves, and emails you send to hello@zenkaku.dev are forwarded to our email provider. We do not share your information with anyone else unless the law requires it.

How long we keep it

We keep your information for up to two years after your last contact with us, or until you ask us to delete it.

Your choices

You can ask us to show, correct or delete your information, or object to how we use it, at any time by emailing hello@zenkaku.dev. If you are in the EU or the UK, you can also complain to your local data protection authority.

Changes

If we change this policy, we will post the new version on this page.