Website privacy

This page describes the public Muhan website at muhan-kids.com, operated by Muhan Labs LLC. It does not describe the separate mobile app’s data processing.

The little math preview

The website examples run in your browser. Answers are not sent to a server or saved. Reloading the page resets the preview. There is no learner account or sign-in on this website. In the separate Muhan mobile app, parents can create learner profiles and save practice progress.

Cookies and analytics

Our website code does not set cookies, use local storage, or load advertising or analytics services. Fonts and illustrations are served with the website. A theme choice lasts only for the current page.

Joining early access

The signup form is for parents and guardians. With your agreement, we collect your email address and a record of the consent you gave so that Muhan Labs LLC can send Muhan development updates and early-access invitations. Joining is free and does not create an app account or a paid subscription. Please do not submit children’s personal information.

After joining, you may also share an optional device preference. We associate that preference with your email to help plan invitations. Skipping this question does not affect your signup. We do not save your email or preference in browser storage or include them in page URLs.

Submissions are processed and stored through Netlify Forms on our behalf. Netlify also processes technical request information and applies spam filtering to help protect the forms. We use your signup information for the updates and invitations you requested, not for advertising profiles. We keep it while operating the early-access list, unless you ask us to remove it sooner.

You can withdraw your agreement, stop updates, or request deletion by emailing ike.jeon@muhan-labs.com or replying to an update. Please use the email address you signed up with so we can locate your record.

Family pilot interest

The family pilot interest form is for adult parents and guardians in the United States. We collect your own email address, your agreement to pilot-related email follow-up, and the notice version. Netlify Forms processes and stores these submissions on our behalf, with technical request information and spam filtering. We use them to review interest and contact potential participants about this proposed pilot.

This form does not ask for children’s names, birth dates, answers, diagnoses or other health details. Your contact agreement does not enroll a family, create app access, give permission to collect learner data, or subscribe you to other Muhan updates. Any participation and learner-data collection require a separate parent review and invitation.

We review the interest list weekly. We will remove non-enrolled pilot-only contact records within 30 days after the dated recruitment window closes, or sooner if you ask. Enrolled app, parent-permission, support and research records have separate notices and handling rules; this website form does not establish those permissions. An independently requested early-access signup remains separate.

To stop pilot follow-up or request removal, email ike.jeon@muhan-labs.com using the adult address you submitted. We do not add interest contacts to advertising audiences or store their email in page URLs or browser storage.

Website hosting

The website is hosted on Netlify. Netlify processes technical request information needed to deliver and secure the site, which may include IP addresses and browser information. See Netlify’s privacy policy for information about its processing.

If you contact us

Email links open your own email application. If you send an email, we receive your email address and the information you choose to include so that we can respond. Please contact us as a parent or guardian and avoid including children’s personal information. An inquiry does not automatically subscribe you to a mailing list.

Questions or requests

To ask about information you have sent to us, or to request its deletion, email ike.jeon@muhan-labs.com. Mobile app account requests are handled through the app’s account controls and support process.

Updated October 13, 2026.