1. Who We Are
Engineering 3D is an educational mobile application operated under the developer name MDTechGlobal. The app provides engineering learning content, including educational material, interactive features, simulations, and 3D models.
In this Privacy Policy, “Engineering 3D,” “we,” “us,” and “our” refer to the developer and operator of the Engineering 3D application.
2. Information We Collect
Account information
When you create or sign in to an account, we may receive information such as:
- Your name.
- Your email address.
- A unique account or authentication identifier.
- Your profile photo, if provided by your selected sign-in provider.
Authentication information
We use authentication services to help verify your identity and protect access to your account. Authentication tokens may be processed for sign-in and session verification. We do not receive or store your Google account password.
App and device information
Certain technical information may be processed automatically when you use the app, such as app version, device type, operating system, language, network information, timestamps, diagnostic information, and technical logs needed to operate, secure, and troubleshoot the service.
Purchase and entitlement information
If you purchase paid content, a subscription, or another digital product through Google Play, we may receive information required to verify the purchase, such as product identifiers, purchase tokens, order status, subscription status, and entitlement status.
We do not receive or store your full payment-card number or payment credentials. Payment processing is handled by Google Play and its payment partners.
3. How We Use Information
We use information collected through Engineering 3D to:
- Create, authenticate, and maintain user accounts.
- Provide educational content, app features, and 3D experiences.
- Verify purchases, subscriptions, and premium access.
- Prevent fraud, abuse, unauthorized access, and account misuse.
- Maintain the security and reliability of our services.
- Diagnose bugs and technical problems.
- Respond to support, privacy, or account-related requests.
- Comply with applicable legal and regulatory obligations.
4. Google Sign-In and Firebase Authentication
Engineering 3D may use Google Sign-In and Firebase Authentication to provide account creation and login functionality.
If you choose Google Sign-In, Google may provide us with information associated with your Google account that you authorize us to receive, such as your name, email address, profile image, and a unique Google account identifier.
Authentication information is used to identify your account, maintain secure sessions, and help protect premium or account-specific features.
5. Google Play Purchases and Billing
Engineering 3D may offer paid digital products, premium access, or subscriptions through Google Play Billing.
Google processes your payment transaction. We may send a Google Play purchase token and related purchase information to our server or to Google services in order to verify that a purchase is valid and determine whether your account is entitled to premium features.
We do not independently process or store your payment-card details.
6. Third-Party Services
Engineering 3D relies on third-party service providers for certain functionality. Depending on the features you use, these may include:
- Google Firebase — for authentication and related backend services.
- Google Sign-In — for signing in using a Google account.
- Google Play Services and Google Play Billing — for app distribution, purchases, subscriptions, licensing, and related services.
- Cloud infrastructure and content-delivery providers — for hosting application content, APIs, 3D models, and other app resources.
These providers may process information in accordance with their own privacy policies and terms. We encourage you to review the privacy information provided by the services you use.
7. How We Share Information
We do not sell personal information. We may share or disclose limited information:
- With service providers that help us operate Engineering 3D.
- When necessary to verify purchases or provide requested features.
- To detect or prevent fraud, abuse, security incidents, or illegal activity.
- When required by law, regulation, legal process, or a valid governmental request.
- To protect our rights, users, systems, or the public where legally permitted.
8. Data Retention
We retain personal information only for as long as reasonably necessary to provide the app, maintain your account, verify purchases and entitlements, satisfy legal obligations, resolve disputes, prevent fraud, and enforce our agreements.
Some records may need to be retained after account deletion where required for legal, accounting, fraud-prevention, security, or regulatory purposes.
9. Account and Data Deletion
You may request deletion of your Engineering 3D account and associated personal information by contacting us at husain68644@gmail.com.
In your request, identify the email address associated with your Engineering 3D account. For security, we may need to verify that you are the account owner before completing the request.
After verification, we will delete or anonymize personal information associated with your account unless retention is required or permitted by applicable law. Purchase records maintained independently by Google are governed by Google's own retention practices.
10. Security
We use reasonable administrative and technical safeguards designed to protect information against unauthorized access, disclosure, alteration, or destruction. These measures may include authenticated access, secure communications, server-side verification, and restricted access to backend services.
However, no internet transmission, application, or storage system can be guaranteed to be completely secure.
11. Children's Privacy
Engineering 3D is intended as an educational application and is not designed to knowingly collect personal information from children in violation of applicable law.
If you are a parent or guardian and believe that a child has provided personal information through Engineering 3D without the required authorization, please contact us so that we can review and, where appropriate, delete the information.
12. Your Choices and Privacy Rights
Depending on where you live and applicable law, you may have rights concerning your personal information, including the ability to request access, correction, deletion, or information about how your data is processed.
You may also stop using Engineering 3D, sign out of your account, or request account deletion at any time.
13. International Processing
Some service providers used by Engineering 3D may process or store information on servers located outside your country. Where applicable, such processing is subject to the safeguards, contractual terms, and legal requirements of the relevant service provider and applicable law.
14. Changes to This Privacy Policy
We may update this Privacy Policy from time to time to reflect changes to the app, our practices, third-party services, or legal requirements. When we update the policy, we will revise the “Last updated” date at the top of this page.
We encourage you to review this page periodically.
15. Contact Us
If you have questions about this Privacy Policy, your personal information, or an account deletion request, contact:
Developer: MDTechGlobal
App: Engineering 3D
Website:
https://techt.site/
Email:
husain68644@gmail.com
+91 6396625635