Privacy Policy

Hello Kanji — Effective September 6, 2026

Hello Kanji (“we”, “our”, or “us”) is a kanji learning application. This policy explains what data we collect, how we use it, and your rights.

1. Data we collect

When you sign in with Google, we receive:

  • Your Google account name and email address

When you use the app, we store in our database:

  • Your favorite kanji and pinned quiz sets
  • Your quiz session history (scores and dates)
  • Your font preference

We also collect anonymous usage analytics (screens visited, quiz completions, device type and language). No analytics data is linked to personally identifiable information beyond an internal user ID.

2. How we use your data

  • To authenticate you and sync your personal data across devices
  • To personalise your learning experience (quiz weighting, favorites)
  • To understand how the app is used so we can improve it

We do not sell your personal data. We do not use your private quiz history for profiling or direct advertising. Third-party advertising partners and affiliates may use standard cookies and identifiers as detailed in Section 4 below.

3. Third-party services

Hello Kanji uses the following third-party services, each governed by their own privacy policy:

4. Advertising and Affiliate Disclosures

Hello Kanji is committed to providing free, unhindered access to all kanji learning resources. To fund ongoing development and hosting, we display contextual advertisements through third-party partners and participate in affiliate marketing programs.

Third-Party Advertising Partners

We partner with third-party advertising networks, such as Google AdSense. Third-party vendors, including Google, use cookies, web beacons, and similar technologies 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 visit to Hello Kanji and other sites on the Internet.

You may opt out of personalized advertising by visiting:

For users in the European Economic Area (EEA), the United Kingdom (UK), and Switzerland, we provide an IAB TCF-aligned Consent Management Platform (CMP) foundation that allows managing cookie and advertising personalization consent.

Affiliate Program Disclosures

Kanjiru participates in affiliate programs and may earn a commission on qualifying purchases made through links on our site, at no extra cost to you.

As an Amazon Associate I earn from qualifying purchases.

5. Data retention

Your account data is retained for as long as your account is active. You may request deletion of your data at any time by contacting us at the address below, and we will delete it within 30 days.

6. Children's privacy

Hello Kanji is not directed at children under 13. We do not knowingly collect personal data from children under 13.

7. Changes to this policy

We may update this policy from time to time. We will notify you of significant changes by updating the date at the top of this page.

8. Contact

If you have questions about this policy or your data, please contact us at:
[email protected]