PRIVACY POLICY
Effective Date: Mar 13, 2026 (Last Updated: March 13, 2026)
Quang Trường operates the Metal Detector & EMF Scanner application, which is provided at no cost and is ad-supported. This privacy policy is intended to inform users regarding the collection, use, and disclosure of personal information when using our Service.
By using the Service, you agree to the collection and use of information in accordance with this policy.
We may collect and use personal information to provide and improve our Service. The types of personal data we collect include:
Device or Other IDs: We may collect Device IDs (such as UUID, Advertising ID, or other unique device identifiers) for the purposes outlined in this policy. We do not collect IMEI or MAC addresses.
Approximate Location: Derived from your device's IP address.
Log Data: If the app encounters an error, we may collect log data such as your device's IP address, device name, operating system version, app configuration, and usage statistics.
In-App Activity: Information about your interactions with the app, such as app launches, feature usage, and session duration (collected via Firebase Analytics).
Cookies: We do not explicitly use cookies, but third-party services like Apple App Store Services , AdMob, and Firebase Analytics may use cookies or similar technologies to collect information for their services.
Precise Location: The app can access your device’s precise location (GPS) when you grant the CAMERA + LOCATION permission together and use features like “add GPS watermark” or “geo-tag photos”. This data is processed only on-device and NEVER sent to our servers or any third party.
Crash logs with installed apps list: Firebase Crashlytics automatically collects a list of all apps installed on your device when a crash occurs. This helps us fix bugs faster. Google receives this list. You can disable it any time in Settings → Privacy → Analytics & diagnostics → turn off “Share analytics with developers”.
The personal information we collect is used for the following purposes:
To provide and maintain the Service (e.g., core camera functionality).
To improve, personalize, and enhance the Service (e.g., feature recommendations based on usage).
To monitor the performance and error reporting of the app.
For targeted advertising and analytics purposes (e.g., serving relevant ads via AdMob).
We will not use or share your information except as described in this Privacy Policy. You can opt out of personalized advertising by adjusting your device settings (iOS: Settings > Privacy & Security > Tracking, then turn off “Allow Apps to Request to Track”)
Our app uses third-party services that may collect information used to identify you. These include:
Apple App Store Services
AdMob
Firebase Analytics
These third parties may collect and use data in accordance with their own privacy policies. You can find links to their privacy policies below:
If you are located in the European Union (EU), California, or Virginia, you have specific rights regarding your personal data:
Right to Access: You have the right to request access to your personal data.
Right to Correct: You have the right to request correction of inaccurate or incomplete personal data.
Right to Deletion: You can request the deletion of your personal data.
Right to Restrict Processing: You can request restrictions on the processing of your personal data.
Right to Object: You have the right to object to processing, especially for marketing purposes.
Right to Know: You can request information about the categories and specific personal data we collect about you.
Right to Delete: You have the right to request the deletion of your personal data.
Right to Opt-Out: You can opt-out of the sale of your personal data (although we do not sell your data).
Right to Non-Discrimination: You will not be discriminated against for exercising your rights.
Right to Access: You can request access to your personal data.
Right to Correct: You can request correction of inaccurate personal data.
Right to Delete: You can request deletion of your personal data.
Right to Opt-Out: You can opt-out of targeted advertising, the sale of personal data, and profiling.
To exercise any of these rights, including data deletion, please contact us at the details below. We will respond to verified requests within 30 days (or 45 days for CCPA, if applicable). For deletion, we will remove your data from our systems unless retention is required for legal or operational reasons (e.g., fraud prevention). If the app has no user accounts, deletion applies to all collected identifiers and logs associated with your device.
Email: minh0211sdtq@gmail.com
Advertising and Opt-Out Options
This app uses Google AdMob to display ads. AdMob (provided by Google) may collect data such as your device advertising ID, IP address, and usage information to serve personalized ads.
Google does not sell your personal information. However, the use of your data for personalized advertising may be considered a "sale" or "sharing" of personal information under certain US state privacy laws (e.g., California, Colorado, Virginia, etc.).
How to opt out:
1. Opt out of personalized ads: Go to your device settings > Google > Ads > Opt out of Ads Personalization (on Android) or Settings > Privacy & Security > Apple Advertising > Personalized Ads (turn off on iOS).
2. Manage your ads preferences online: Visit https://adssettings.google.com
3. For California and other state residents: You can submit a "Do Not Sell or Share My Personal Information" request at https://myadcenter.google.com
More details on how Google uses data with partner apps: https://support.google.com/admob/answer/7666335 (How Google uses data when you use our partners’ sites or apps)
Google's full Privacy Policy: https://policies.google.com/privacy
Right to Know What Personal Information Is Shared
You have the right to know whether your personal information is being shared with third parties and for what purpose.
Yes, we share the following personal information with third parties:
• Device advertising ID
• IP address (approximate location)
• App usage data (via Firebase Analytics)
• Crash logs and performance data
These are shared with:
• Google AdMob (for showing ads)
• Google Firebase Analytics (for understanding how the app is used)
• Google Play Services (for core app functionality)
Purpose of sharing:
– To display relevant ads
– To improve app performance and fix bugs
– To provide basic camera features
You can see exactly what data Google receives from apps like ours here:
https://support.google.com/admob/answer/7666335
You can stop all sharing for advertising at any time using the opt-out methods listed above.
Right to Know Whether Your Personal Information Is Sold
You have the right to know if we sell your personal information.
We do NOT sell your personal information in the traditional sense.
However, sharing your Device Advertising ID and usage data with Google AdMob for personalized ads may be considered a “sale” or “sharing” under certain US state privacy laws (California CCPA, Colorado CPA, Virginia VCDPA, etc.).
Therefore, YES — this specific sharing for personalized ads is legally treated as a “sale” in some states.
You can stop this “sale” instantly using any of these methods:
1. Device settings → Google → Ads → Opt out of Ads Personalization
2. Device settings → Privacy → Apple Advertising → turn off Personalized Ads (iOS)
3. Online: https://myadcenter.google.com (click “Do Not Sell or Share My Personal Information”)
4. Online: https://adssettings.google.com
After opting out, you will only see non-personalized ads and no further “sale” occurs
Right to Lodge a Complaint with a Supervisory Authority (GDPR – EU/UK users)
If you are in the European Union, European Economic Area, or United Kingdom, you have the right to lodge a complaint about our data processing with your local supervisory authority.
You can find your country’s authority here:
https://edpb.europa.eu/about-edpb/board/members_en
For example:
• France → CNIL (cnil.fr)
• Germany → each state has its own (e.g., Bayern: lda.bayern.de)
• Netherlands → Autoriteit Persoonsgegevens (autoriteitpersoonsgegevens.nl)
• Spain → AEPD (aepd.es)
We always prefer you contact us first at minh0211sdtq@gmail.com so we can fix any issue immediately, but you are free to go straight to your authority anytime.
Legal Basis for Processing Your Personal Data (GDPR – EU/EEA/UK users)
We only process your personal data when we have a valid legal basis under GDPR Article 6:
1. **Legitimate Interests** (Art. 6(1)(f)) – This is our main legal basis for:
• Showing you ads via Google AdMob
• Collecting crash logs and analytics via Firebase
• Measuring app performance and fixing bugs
• Detecting fraud or abuse
→ These are necessary for running a free, ad-supported camera app and are proportionate to your privacy rights.
2. **Consent** (Art. 6(1)(a)) – We rely on your consent for:
• Personalized ads (you can withdraw consent anytime using the opt-out methods above)
3. **Contract** (Art. 6(1)(b)) – Processing needed to provide the core camera features you requested.
You can withdraw consent or object to legitimate interests processing at any time by emailing minh0211sdtq@gmail.com – we will stop within 24 hours.
We may collect Device ID data (such as UUID, Advertising ID) and other device-specific information automatically when you use our Service. This information is used for:
App functionality and user experience.
Analytics, performance monitoring, and error reporting.
Advertising and targeted content.
Security and fraud prevention.
We may share Device ID data with third-party services like Google Play Services and AdMob. Please refer to their privacy policies for more details:
We retain your personal data only for as long as necessary to fulfill the purposes outlined in this Privacy Policy, including providing you with our services, complying with legal obligations, and resolving disputes.
Log Data and Device ID may be retained for up to 12 months to help us improve the Service, troubleshoot errors, or comply with legal obligations.
If you request the deletion of your personal data, we will remove it from our systems, except where retention is necessary for legal or operational reasons.
The data controller for your personal data under applicable data protection laws (GDPR, CCPA, VCDPA) is:
Quang Truong
xom suon, xa thanh duc, nghe an, Vietnam
Email: minh0211sdtq@gmail.com
If you have any questions regarding the processing of your personal data or wish to exercise your rights under GDPR, you can contact our Data Protection Officer (DPO) at:
Quang Truong
xom suon, xa thanh duc, nghe an, Vietnam
Email: minh0211sdtq@gmail.com
Metal Detector & EMF Scanner respects your privacy. The app only requests permissions that are necessary to provide core features and ensure the best user experience.
Camera Access
To allow the app to use the device camera to detect magnetic field variations through visual sensing features.
The camera helps the app analyze environmental data to assist in locating nearby metal objects.
The app only accesses the camera with the user’s permission and does not record photos or videos or use the camera in the background.
Network Access
Required to support app functionality and load necessary resources for the metal detection features.
The app does not collect or transmit personal user data through network usage.
All foreground services stop immediately when the user turns off the corresponding feature, or stop entirely when no features remain active.
Please note:
The app does not perform background audio recording.
No data is collected, stored, uploaded, or shared.
All permissions and foreground services shut down as soon as no active feature requires them.
We may update this Privacy Policy from time to time. When we make changes, we will post the updated policy here and update the "Effective Date" at the top of the page. We encourage you to review this policy periodically for any changes. Significant updates will also be notified in-app.
Our Service does not address anyone under the age of 13. We do not knowingly collect personal data from children under 13. If we discover that a child under 13 has provided us with personal data, we will immediately delete this information from our systems. If you are a parent or guardian and you are aware that your child has provided us with personal data, please contact us so we can take appropriate action.
We strive to use commercially acceptable means to protect your personal data, including encryption in transit (e.g., TLS for data sent to third-party services). However, please remember that no method of transmission over the internet or electronic storage is 100% secure, and we cannot guarantee absolute security.
Our Service may contain links to other websites. If you click on a third-party link, you will be directed to that site. We encourage you to review the privacy policy of every site you visit. We have no control over and assume no responsibility for the content, privacy policies, or practices of any third-party sites or services.
If you have any questions or suggestions about this Privacy Policy, please feel free to contact us at:
Email: minh0211sdtq@gmail.com