Privacy Policy

Last updated: May 29, 2026

1. Introduction

This Privacy Policy applies to CipherHeart Sudoku, a ToccaTech app. CipherHeart is designed with privacy in mind — no account is required and no personal information is collected. The sequence you enter runs entirely in your browser and is never sent to or stored on our servers.

2. Information we collect

We may collect the following types of information:

Usage data — pages visited, time spent, browser type, device type, and referring URLs.
Cookies — small text files placed on your device by third-party services.
Log data — IP address, browser version, and other standard server log information.

We do not collect your name, email address, or any personally identifiable information. The sequences, symbols, and puzzle data you generate are never transmitted to or stored on our servers.

3. How we use your information

To understand how visitors use the site and improve it.
To serve advertisements via Google AdSense.
To ensure the security and stability of our service.

4. Cookies & third-party services

We use the following third-party services that may set cookies on your device:

Google AdSense — serves ads based on your prior visits to this and other websites. You may opt out of personalized advertising at google.com/settings/ads.
Cloudflare — provides hosting, CDN, and security services and may process technical data such as IP addresses. See Cloudflare's Privacy Policy.

5. Data sharing

We do not sell your personal data. We share data only with the third-party service providers listed above, as necessary to operate the site.

6. Your rights

Depending on your location, you may have the right to access, correct, or delete the data we hold about you, or to object to or restrict how we process it. Because we do not collect personal data directly, most of these rights are satisfied by default. To exercise any rights, contact us at the address below.

7. Children's privacy

CipherHeart Sudoku is not directed at children under 13. We do not knowingly collect personal information from children under 13.

8. Changes to this policy

We may update this policy from time to time. Changes will be posted on this page with an updated date. Continued use of the site after changes are posted constitutes your acceptance of the revised policy.

9. Contact

For privacy-related questions, contact us at privacy@toccatech.com.