Privacy Policy

Last updated: July 7, 2026

Overview

This Privacy Policy applies to mobile applications developed and published by Nguyen Duoc (“we”, “us”, or “our”). Our apps are provided at no cost or through optional paid features and are intended for use as described in each app's store listing.

Our apps may appear under different developer names on app stores:

  • Apple App Store: Nguyen Duoc
  • Google Play: Genius Software

This page describes how we collect, use, and disclose personal information when you use our apps. By using our apps, you agree to the practices described in this policy. We do not share your information with anyone except as described below.

Data controller: Nguyen Duoc
Website: duocnguyen.dev
Contact: npdstd@gmail.com

Information We Collect

To provide and improve our apps, we and our service providers may collect information such as device identifiers, app usage data, crash reports, advertising identifiers, and information you choose to provide (for example, an email address when contacting support). Some data may be stored on your device and processed locally; other data may be collected by third-party services integrated into our apps.

Our apps use third-party services that may collect information used to identify you or your device. Please review the privacy policies of these providers:

Service Providers

We may use third-party companies and individuals to host, analyze, advertise, or support our apps. These parties may access personal information only to perform tasks on our behalf and are obligated not to disclose or use it for any other purpose.

Security

We use commercially reasonable measures to protect personal information. However, no method of transmission over the internet or electronic storage is completely secure, and we cannot guarantee absolute security.

Our apps may contain links to third-party websites or services. We do not control and are not responsible for the content, privacy policies, or practices of those sites or services.

Children's Privacy

Our apps are not directed to children under the age of 13. We do not knowingly collect personally identifiable information from children under 13. If you are a parent or guardian and believe your child has provided us with personal information, please contact us at npdstd@gmail.com and we will take steps to delete it.

Your Rights

Depending on where you live, you may have rights regarding your personal information, including the right to access, correct, delete, or restrict certain processing. To exercise these rights, contact us at npdstd@gmail.com.

European Economic Area, United Kingdom, and Switzerland: If you are in the EEA, UK, or Switzerland, you may also lodge a complaint with your local data protection authority.

California residents: We do not sell your personal information. You may request information about the categories of data we collect and how we use it by contacting us at the email above.

Subscriptions and In-App Purchases

Some of our apps offer optional premium subscriptions or in-app purchases, which may include ad-free access or additional features.

Subscriptions may be offered on a monthly or annual basis. On iOS, your Apple ID account is charged upon confirmation of purchase; on Android, your Google Play account is charged. Subscriptions renew automatically unless cancelled in your device or store account settings (Manage Subscriptions on iOS, or Subscriptions in Google Play). Where required by the applicable store, we will notify you in advance of price changes. Renewal charges may be applied up to 24 hours before the start of each billing period.

To avoid charges, cancel before the end of the current trial or billing period. In-app purchases and subscriptions are also governed by the terms of the store where you obtained the app:

Changes to This Policy

We may update this Privacy Policy from time to time. Changes take effect when posted on this page. We encourage you to review this page periodically. The “Last updated” date at the top indicates when this policy was last revised.

Contact Us

If you have questions about this Privacy Policy or how we handle your data, contact us: