Privacy Policy

Last updated: July 6, 2026

This Privacy Policy describes how KEICHAU TECHNOLOGY LIMITED ("we", "us" or "our") handles information in connection with our mobile applications (the "Apps") and our website keichau.com (together, the "Services").

1. Information We Collect

Our Apps are designed to work without requiring you to create an account or provide personal information. We do not directly collect personally identifiable information such as your name, email address or phone number, unless you voluntarily provide it (for example, by contacting us).

Certain technical information may be collected automatically through the third-party services described below, such as device model, operating system version, language, approximate region, crash logs and general usage statistics. This information is aggregated or de-identified and is used to keep the Apps working reliably.

2. Device Permissions

Some Apps request access to device features solely to provide their core functionality, for example:

• Camera — used for augmented-reality measurement features. Camera images are processed on your device and are not uploaded to us.
• Motion & sensors — used for level and angle measurement. Sensor readings stay on your device.

You can revoke permissions at any time in your device settings; the related features may stop working as a result.

3. Third-Party Services

The Apps may use third-party services that collect information as described in their own privacy policies, including:

• Google Play Services
• Google AdMob (advertising)
• Google Firebase (analytics and crash reporting)

Advertising partners may use device identifiers (such as the advertising ID) to serve and measure ads. You can reset or limit the use of your advertising ID in your device settings.

4. How We Use Information

• To provide, operate and improve the Services;
• To diagnose crashes and fix bugs;
• To understand aggregate usage so we can prioritise improvements;
• To display advertising that supports free Apps.

5. Data Sharing

We do not sell your personal information. Information is shared only with the third-party service providers listed above, to the extent necessary to operate the Services, or where required by law.

6. Data Retention

We retain aggregated analytics and crash data only for as long as needed for the purposes described in this policy. Data held by third-party services is retained according to their own policies.

7. Children's Privacy

Our Services are not directed to children under 13 (or the equivalent minimum age in your jurisdiction), and we do not knowingly collect personal information from children. If you believe a child has provided us personal information, please contact us and we will delete it.

8. Security

We take reasonable technical and organisational measures to protect information. However, no method of transmission or storage is completely secure, and we cannot guarantee absolute security.

9. Your Rights

Depending on your jurisdiction, you may have rights to access, correct or delete personal information we hold about you. To exercise these rights, contact us using the details below.

10. Changes to This Policy

We may update this Privacy Policy from time to time. Changes take effect when the updated policy is posted on this page, with the "Last updated" date revised accordingly.

11. Contact Us

If you have any questions about this Privacy Policy, contact us at keichauapp@gmail.com.