Privacy Policy for Universal Calculator

Effective Date: April 16, 2026
Developer: Shuo Liu
App Name: Universal Calculator

1. Information Collection and Use

To provide core calculation functions, stable operation, and advertisement services, Universal Calculator may collect the following categories of information (all processed in an anonymized manner):

  • Device Information: device brand, model, operating system version, screen density and resolution, device language and time zone, SIM card information (MCC/MNC), CPU details, available storage space, OAID, device MAC address, device identifiers (IMEI, IMSI, ICCID, GAID (for GMS services), MEID, hardware serial number build_serial, Android_ID).
  • Network Information: IP address, carrier information, Wi-Fi status, network signal strength.
  • Application Information: app package name, running processes, version number, foreground/background status, list of installed applications.
  • Sensor Information: linear acceleration sensor, magnetic field sensor, rotation vector sensor, gravity sensor, pressure sensor.
  • Advertising Data: ad impressions, clicks, conversions, and other interaction data.
  • Location Information: precise or coarse location (including Wi-Fi list, WLAN access points such as SSID and BSSID, cell tower information).
  • Performance Data: crash logs, performance metrics.
  • System Information: battery level, charging state, screen brightness, device name, clipboard data (only when necessary for user copy-paste actions).

This data is used exclusively for application functionality improvement, ad relevance, error diagnosis, and service security. No personally identifiable information is actively collected.

2. Third-Party SDK - Google Advertising

This application integrates the Google Mobile Ads SDK (Google AdMob) to display advertisements and optimize advertising performance. The Google Ads SDK may collect certain information listed in Section 1, including advertising identifiers (GAID, Android_ID), IP address, coarse location, sensor data, application usage, and ad interaction data. This data is used for ad serving, analytics, fraud prevention, and personalization (where permitted by law). For further details, please refer to the Google Privacy Policy and AdMob Terms.

No other third-party SDKs are integrated into this application. You may manage ad tracking preferences via your device settings (e.g., reset advertising ID or limit ad tracking).

3. Managing Your Information

Access and Inquiry: As the application does not support user accounts, all collected data is anonymized and cannot directly identify you. To request access to data associated with your device identifiers (Android_ID, OAID, ODID, etc.), please send an email to gms543@126.com. The developer will respond within 3-7 business days.

Correction and Deletion: You have the right to request correction of inaccurate data or deletion of your data. Uninstalling the application will remove all locally stored data. For complete removal of anonymized data associated with your device, please email gms543@126.com with relevant device identifiers. Requests will be processed within 3-7 days.

4. Data Storage and Retention

Storage Location: All information collected is stored on servers located within the People's Republic of China. We do not transfer personal data outside of China unless required by law or with your explicit consent, in which case we will comply with cross-border data transfer regulations.

Retention Period: We retain information only for as long as necessary to fulfill the purposes described in this policy or as required by law (e.g., network logs retained for at least six months under the Cybersecurity Law of China). After the retention period, data will be deleted or anonymized.

5. Data Security

We implement commercially reasonable technical and organizational measures to protect your information against unauthorized access, alteration, disclosure, or destruction. However, no internet transmission or electronic storage method is completely secure. While we strive to protect your data, we cannot guarantee absolute security.

6. Children's Privacy

Universal Calculator is intended for general audiences and may be used by children. We recognize the importance of protecting children's privacy, especially when using online services. This application does not knowingly collect personal information from children without appropriate parental or legal guardian consent. Since all data collected is anonymized and does not directly identify any individual (including children), no special processing is applied to children's data. However, we strongly encourage parents and legal guardians to supervise their children's use of mobile applications and to review the information collected.

If you are a parent or guardian and believe that your child has provided us with personally identifiable information (which we do not intentionally collect), please contact us immediately at gms543@126.com. We will take steps to delete such information promptly.

We also recommend that parents educate children about safe internet practices, including not sharing personal information without permission. For users under the applicable age of digital consent (e.g., under 13 in many jurisdictions), parental consent is required for any data processing. By using this application, you confirm that you have obtained such consent if the user is a child.

7. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. Any changes will be posted on this page, and the "Effective Date" at the top will be revised. For material changes, we may provide additional notice through the application or via email. Your continued use of the application after such modifications constitutes your acknowledgment of the updated policy.

8. Contact Us

If you have any questions or concerns regarding this Privacy Policy or our data practices, please contact us at: gms543@126.com.

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