Privacy Policy

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Privacy Policy for Test Nexus

Last Updated: November 17, 2025

This Privacy Policy describes how TestNexus By Twocan ("we," "us," or "our") handles information in connection with your use of the Test Nexus mobile application (the "Service"). Your privacy is important to us, and we are committed to being transparent about our data practices.

1. Information We Collect and Use

We've designed our Service to be a powerful tool while minimizing the collection of your personal data. The information we handle is used to provide and improve the Service's functionality.

1.1. Personal Information for Authentication

We use Google Sign-In as the sole method to create an account and log you into the Service. This process is managed by Google's secure authentication service. Firebase Authentication, a Google service, stores a unique identifier (Firebase User ID) and the email address associated with your Google account to manage your session. We do not support other sign-in methods.

1.2. Location Data

Our Service uses your device's location to provide location-based features, such as showing your current position on the map and enabling the mock location functionality. We request your permission before accessing your location.

Your location data is processed in real-time only and is never stored on your device or our servers by our app. Your use of location-based features is also subject to the Google Privacy Policy.

1.3. User-Generated Data

The core feature of our Service is to allow you to create and manage data profiles for testing purposes. This data is created by you manually or through the app's data generator feature.

Strictly Local Storage: All profile data you generate is stored exclusively in a local database on your device. This information is never transmitted, uploaded, synced, or backed up to any server we control. It is completely offline and for your use only.

1.4. App Content from the Cloud

We use Google's Cloud FireStore to store and sync non-personal, general app content, such as our "How-To" guides and other instructional information. This ensures you always have the most up-to-date information within the app. FireStore is not used to store any of your personal or user-generated data.

1.5. Information Collected Automatically

To maintain and improve our Service, we use several services from Google's Firebase platform, which collect a limited amount of anonymous data automatically:

• Firebase Analytics: Collects anonymous usage statistics (e.g., app opens, feature usage) to help us understand how users interact with the Service and to improve it.
• Firebase Crashlytics: Collects crash reports and performance data to help us identify and fix bugs, improving app stability.

This data is anonymized and aggregated. It does not include personally identifiable information.

1.6. Advertising and Marketing

To support the free version of our Service, we display advertisements through Google AdMob, a Google advertising service.

What Information is Collected for Advertising:

When you use our Service, AdMob and its advertising partners may automatically collect:

• Advertising ID: A unique, user-resettable identifier for advertising purposes
• Device Information: Device type, operating system version, screen size
• IP Address: Used to determine general location (country/city level)
• App Interactions: How you interact with ads (views, clicks)
• General Location: Approximate location based on IP address (not precise GPS location)

How Advertising Data is Used:

• To display relevant advertisements to you
• To measure ad performance and effectiveness
• To detect and prevent ad fraud
• To provide personalized or non-personalized ads based on your consent

Personalized vs Non-Personalized Ads:

• Personalized Ads: Ads tailored to your interests based on your activity across apps and websites. Requires your consent in regions like Europe (GDPR) and California (CCPA).
• Non-Personalized Ads: Generic ads not based on your personal interests. Shown if you decline consent for personalized advertising.

Third-Party Advertising Partners:

AdMob works with third-party advertising partners to serve ads. These partners may also collect data about your device and ad interactions. A list of AdMob's advertising partners can be found at: 

https://support.google.com/admob/answer/9012903

Your advertising data is subject to Google's Privacy Policy: https://policies.google.com/privacy

You can learn more about how Google uses data from apps that use their services at: https://policies.google.com/technologies/partner-sites

2. How We Use Your Information

We use the information we collect for the following purposes:

• To Provide and Maintain the Service: Your Google account information is used to authenticate you and manage your session.
• To Enable Location-Based Features: We use your location data in real-time to display your position on the map and enable mock location functionality.
• To Store Your Testing Data Locally: All user-generated profile data is stored on your device for your exclusive use.
• To Provide App Content: We use Cloud FireStore to deliver general instructional content.
• To Improve the Service: Firebase Analytics and Crashlytics data help us understand app usage and fix issues.
• To Display Advertisements: We use AdMob to show ads that support our free Service. Ad networks may use collected information to display relevant advertisements and measure ad performance.

3. How We Share Your Information

We do not sell your personal data. We only share information with third-party service providers as necessary to operate our app and display advertisements. Our primary service providers are Google and its advertising partners. The following services are used:

• Firebase Authentication: Manages your login via Google Sign-In. Data shared: Firebase User ID, email address.
• Google Maps API: Provides map functionality. Data shared: Location data (in real-time only).
• Cloud FireStore: Stores general app content (How-To guides). No personal or user-generated data is shared.
• Firebase Analytics: Collects anonymous usage data. Data shared: Anonymous app usage patterns.
• Firebase Crashlytics: Collects crash and performance data. Data shared: Anonymous crash reports, device information.
• Google AdMob: For displaying advertisements and collecting advertising data (Advertising ID, device information, IP address, ad interactions).

Advertising Partners:

AdMob works with third-party advertising partners who may receive data about your device and ad interactions. These partners use this information to serve ads across different apps and websites. You can view AdMob's advertising partners at: https://support.google.com/admob/answer/9012903

Your use of these features is subject to the Google Privacy Policy (https://policies.google.com/privacy). We do not share your data with any other third parties.

4. Data Storage, Security, and Retention

4.1. Storage

As detailed above, your personal, user-generated data is stored only in an unencrypted local database on your device. General app content is stored securely on Google's Cloud FireStore servers.

4.2. Security

We implement appropriate technical and organizational measures to protect data. Data transmitted to Google's services is encrypted in transit (HTTPS).

4.3. Retention

• User-Generated Data: Stored on your device until you delete it or uninstall the app.
• Authentication Data: Retained by Firebase as long as your account exists. You can delete your account through the app settings.
• Analytics and Crash Data: Retained by Google Firebase according to their data retention policies, typically for a limited period (e.g., 14 months for Analytics, 90 days for Crashlytics).
• Advertising Data: Advertising data (Advertising ID, ad interactions) is retained by Google AdMob and its partners according to their data retention policies, typically for up to 2 years. You can reset your Advertising ID at any time through your device settings.

5. Your Data Rights and Choices

5.1. Access and Control of Your Data

• User-Generated Data: You have full control over the data you create within the app. You can view, edit, or delete this data at any time through the app interface. This data is stored only on your device.
• Authentication Data: You can manage your Google account information through your Google Account settings.

5.2. Deleting Your Account

You can delete your Test Nexus account at any time through the app settings. This will remove your authentication data from our systems. User-generated data stored on your device will remain until you manually delete it or uninstall the app.

5.3. Location Permissions

You can revoke location permissions at any time through your device's app settings. This will disable location-based features within the app.

5.4. Advertising Choices

Consent Management:

When you first use our Service, you'll be asked to consent to personalized advertising. You can:

• Accept personalized ads (ads tailored to your interests)
• Decline personalized ads (you'll see non-personalized ads instead)

You can change your advertising consent at any time through:

• Settings → Personalized Ads

Opt-Out of Personalized Advertising:

You can also opt out of personalized advertising at the device level:

• Go to Settings → Google → Ads
• Enable "Opt out of Ads Personalization"

Reset Advertising ID:

You can reset your Advertising ID at any time:

• Go to Settings → Google → Ads → Reset advertising ID

Note: Opting out of personalized ads does not mean you won't see ads. You'll still see advertisements, but they won't be based on your interests.

6. Children's Privacy

Our Service is not directed to individuals under the age of 13. We do not knowingly collect personal information from children under 13. If you believe we have inadvertently collected information from a child under 13, please contact us immediately at support@twocan.us, and we will take steps to delete such information.

7. International Data Transfers

Your information may be transferred to and processed in countries other than your country of residence, including the United States, where Google's servers are located. These countries may have data protection laws different from those in your country. By using our Service, you consent to the transfer of your information to these countries.

For European Users (GDPR):

You have the right to access, rectify, delete, or restrict processing of your data. You can withdraw consent for personalized advertising at any time without affecting your ability to use the Service. To exercise these rights, contact us at support@twocan.us.

For California Users (CCPA):

California residents have the right to know what personal information is collected, to request deletion of personal information, and to opt-out of the "sale" of personal information. We do not sell your personal information. You can opt-out of personalized advertising as described in Section 5.4.

8. Changes to This Privacy Policy

We may update our Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy within the app and updating the "Last Updated" date at the top. Your continued use of the Service after any changes indicates your acceptance of the updated Privacy Policy.

9. Contact Us

If you have any questions about this Privacy Policy, please contact us at:

Email: support@twocan.us

Website: https://twocan.us

Website Cookie Notice:

We use cookies on our website (twocan.us) to analyze website traffic and optimize your website experience. By accepting our use of cookies, your data will be aggregated with all other user data. This cookie notice applies only to our website, not to the Test Nexus mobile app.