Privacy Policy

1. Information I collect

I may collect both personal information and non-personal information when you use the services.

Personal information means information that can be used to identify you, such as your name, email address, phone number, or certain device identifiers when they are linked to you.

Non-personal information means information that cannot reasonably be used to identify you on its own, such as device model, app version, general location (city or country), or aggregated usage statistics.

1.1 Information you provide

I collect information that you voluntarily provide, including:

• Contact details – such as your name, email address, or phone number when you contact me or sign up for an account (if applicable).
• Account details – such as username, profile photo, and basic profile information, if the service offers accounts.
• Content – such as messages, comments, posts, photos, and any other content you create or upload using the services.
• Support requests – information you provide when you ask for help, including screenshots, logs you send, and any other details you choose to share.

1.2 Information collected automatically

1.2.1 QR Code Analytics

When you scan QR codes linked to my services (for example, on stickers, business cards, or promotional materials), I collect the following information for analytics purposes:

• IP address – Your device's IP address, which may reveal your approximate geographic location (city and country).
• Location data – Approximate location information derived from your IP address, including country, city, and region.
• Device information – Device type, operating system version, and browser.
• Scan timestamp – Date and time when the QR code was scanned.

Purpose: This information helps me understand:

• Where my promotional materials are most effective
• What types of devices people use to access my services
• Geographic distribution of my audience
• When people are most likely to engage with my content

Data retention: QR scan data is retained for analytics purposes and may be aggregated for reporting. Individual scan records may be retained for up to 12 months, after which they may be anonymized or deleted.

Third-party services: IP geolocation data is obtained through third-party services (such as ip-api.com) that convert IP addresses into approximate location information. These services have their own privacy policies governing how they handle IP lookup requests.

Note: I do not share your IP address or location data with third parties for marketing purposes. This data is used solely for my own analytics to improve my services and understand my audience demographics.

When you use the services, some information is collected automatically, for example:

• Device information – device type, operating system and version, language, time zone, and app or browser version.
• Usage information – pages or screens viewed, features used, navigation paths, time spent, dates and times of use.
• Log data – IP address, error logs, crash reports, performance data, and diagnostic information.

This information may be collected using cookies, local storage, SDKs, or similar technologies, depending on the platform.

1.3 Information from your device (with permission)

Some features may request access to additional information from your device, such as:

• Contacts (to help you find friends or share content).
• Camera, photos, or files (to allow you to capture or upload content).
• Microphone (for audio features).
• Location data (approximate or precise) for location-based features.

Access to these is based on your device or browser permissions. You can deny or revoke permissions at any time in your device settings, but some features may not work without them.

1.4 Information from third-party services

If you choose to sign in or connect through a third-party service (for example, a social login or platform account), that service may share certain information with me (such as your name, email, profile picture, or an identifier), according to their own privacy policy and your settings.

2. How I use your information

I use the information I collect for the following purposes:

2.1 To provide and maintain the services

• To operate the apps, games, and websites you use.
• To create and manage accounts or profiles, if applicable.
• To store and display the content you create or share.
• To process in-app actions or purchases through third-party stores (where applicable).

2.2 To communicate with you

• To respond to your messages, feedback, and support requests.
• To send you important notices about changes, security alerts, or technical issues.
• To send optional updates, tips, or announcements about new features, if you choose to receive them.

2.3 To improve the services

• To understand how people use the services and which features are most used.
• To fix bugs, improve performance, and enhance user experience.
• To develop new features, content, or products.

Where possible, I use aggregated or de-identified information for analysis.

2.4 To protect the services and users

• To detect and prevent fraud, abuse, and security issues.
• To enforce terms of use and other applicable policies.
• To protect my rights, property, and the safety of users.

3. How I share your information

I do not sell your personal information.

I may share information in these situations:

3.1 With other users

Depending on how you use the services and your settings, certain information may be visible to other users, such as:

• Your name, username, and profile photo.
• Content you choose to post publicly (such as comments, posts, scores, or reviews).

3.2 With service providers

I may share information with third-party service providers who help me operate and improve the services, such as:

• Hosting and cloud storage providers.
• Analytics and crash reporting tools.
• Email or notification services.
• Payment processors (for in-app or online purchases, where applicable).

These providers process information on my behalf and are not allowed to use it for their own purposes outside what is necessary to provide their services.

3.3 For legal and safety reasons

I may access, preserve, and disclose information if I believe in good faith that it is reasonably necessary to:

• Comply with laws, legal processes, or government requests.
• Enforce my terms or investigate potential violations.
• Detect, prevent, or address fraud, security, or technical issues.
• Protect my rights, property, or safety, or that of users or the public.

3.4 Business changes

If I ever transfer or substantially change my personal business (for example, by selling or transferring an app to another individual or company), your information may be transferred to the new owner, who must continue to handle it in a way that is consistent with this Privacy Policy or notify you of changes.

4. Data security

I use reasonable technical and organizational measures to protect your information from unauthorized access, loss, or misuse, including:

• Using secure connections (HTTPS) where possible.
• Limiting access to personal data to only what is necessary.
• Regularly updating software and infrastructure.

However, no method of transmission or storage is completely secure, and I cannot guarantee absolute security.

5. Data retention

I keep your information only for as long as necessary for the purposes described in this Privacy Policy, including:

• As long as you maintain an account or actively use the services.
• For as long as needed to comply with legal obligations, resolve disputes, or enforce agreements.

When information is no longer needed, I will delete or anonymize it within a reasonable time, subject to backup and archival limitations.

6. Your rights and choices

Depending on your location and applicable law, you may have the following rights over your personal information:

• Access – You can request a copy of the personal information I hold about you.
• Correction – You can request that I correct inaccurate or incomplete information.
• Deletion – You can request that I delete your personal information, subject to legal or legitimate retention needs.
• Objection / restriction – You may object to or request restriction of certain types of processing.
• Consent management – Where processing is based on your consent (for example, access to contacts or location), you can withdraw your consent at any time via your device settings or by contacting me.

To exercise these rights, please contact me using the details in the Contact section below. I may ask you to verify your identity before responding to certain requests.

You can also:

• Change app or browser permissions (for example, location, contacts, camera).
• Disable cookies in your browser (for web services), though some features may not work properly.

7. Third-party services and links

The services may contain links to third-party websites, apps, or services that I do not own or control, and may integrate third-party SDKs or tools.

• Their own privacy policies govern how they collect and use information.
• I am not responsible for the content or privacy practices of those third parties.

You should review the privacy policies of any third-party services you use.

8. Children's privacy

The services are not intended for children where they are not legally allowed to use them without parental consent (for example, children under 13 or under the minimum age required by your local laws).

I do not knowingly collect personal information from children without appropriate consent. If you believe a child has provided me with personal information, please contact me so I can delete it.

9. International users

Your information may be processed and stored in countries other than your own. Data protection laws may differ from those in your country, but I will take reasonable steps to protect your information in accordance with this Privacy Policy.

10. Changes to this Privacy Policy

I may update this Privacy Policy from time to time. When I do, I will update the "Last updated" date at the top of this page.

If changes are material, I may provide additional notice (for example, in the app or on the website). Your continued use of the services after the changes take effect means you accept the updated Privacy Policy.

11. Contact

If you have any questions about this Privacy Policy, or want to make a request regarding your personal information, you can contact me at:

12. App-Specific Data Practices

The sections above describe my general data practices across all services. Below, I break down what each of my specific apps collects based on its actual configuration.

12.1 Ludo Universe (com.bimql.ludo)

Offline Ludo board game. Child-directed (Google "Designed for Families", content rating G). No user accounts, no login, no user-generated content.

• Data collected: Advertising ID (AD_ID) and device identifiers; app interaction and usage data; crash logs and diagnostics. No name, email, contacts, location, photos, or account data is collected by the app.
• Purpose: Serving and measuring ads, crash reporting, basic analytics, and core app functionality. Because this is a child-directed app, ad content is limited to G-rated content and non-personalized ad settings are applied.
• Third-party SDKs: Google AdMob (privacy policy), Liftoff/Vungle (privacy policy), Unity Ads (privacy policy), Meta Audience Network (privacy policy), Firebase Crashlytics, Firebase Analytics, Firebase Performance Monitoring (privacy policy), Microsoft Clarity (privacy policy), Apple Game Center iOS only (privacy policy).

12.2 Mathematica (com.bimql.mathematica)

Math quiz game with 100 levels, XP leagues, streaks, and leaderboards. iOS and Android.

• Data collected: Advertising ID (AD_ID) and device identifiers; account information (name, email, profile picture if you sign in with Google or Apple); app interaction and usage data; crash logs and diagnostics. If you grant permissions: camera images and photo library images (for profile pictures).
• Purpose: Serving and measuring ads, user authentication and account management, crash reporting, analytics, push notifications, and core game functionality.
• Third-party SDKs: Google AdMob, Meta Audience Network, Firebase Authentication, Firebase Cloud Firestore, Firebase Cloud Storage, Firebase Crashlytics, Firebase Analytics, Firebase Performance Monitoring (privacy policy), Microsoft Clarity (privacy policy), Google Sign-In (privacy policy), Apple Sign-In iOS (privacy policy).

12.3 Mehendi Designs (com.bimql.mehendi)

Henna art inspiration app with thousands of designs, categories, favourites, offline browsing, and AR try-on. iOS and Android.

• Data collected: Advertising ID (AD_ID) and device identifiers; app interaction and usage data; crash logs and diagnostics. If you grant permissions: camera feed (for AR try-on preview), photo library images (to save try-on photos).
• Purpose: Serving and measuring ads, crash reporting, analytics, AR try-on feature, and saving images to your gallery.
• Third-party SDKs: Google AdMob (privacy policy), Meta Audience Network (privacy policy), Firebase Crashlytics, Firebase Analytics, Firebase Performance Monitoring (privacy policy), Microsoft Clarity (privacy policy).

12.4 Engineering Mock Test (com.bimql.nec)

Engineering entrance exam prep app with full-length mock tests, concept revision, and score tracking. iOS and Android.

• Data collected: Advertising ID (AD_ID) and device identifiers; app interaction and usage data; crash logs and diagnostics; quiz scores and progress. If you grant permissions: approximate location (for region-specific exam content), camera and photo library (for scanning study materials).
• Purpose: Serving and measuring ads, crash reporting, analytics, push notifications, region-specific content delivery, and core exam prep functionality.
• Third-party SDKs: Google AdMob (privacy policy), Meta Audience Network (privacy policy), Firebase Crashlytics, Firebase Analytics, Firebase Performance Monitoring (privacy policy), Microsoft Clarity (privacy policy).

12.5 Forest Sudoku / puzzle Sudoku (com.bimql.sudoku)

Sudoku puzzle game with forest-themed design. iOS and Android.

• Data collected: Advertising ID (AD_ID) and device identifiers; app interaction and usage data; crash logs and diagnostics. No name, email, contacts, or account data collected.
• Purpose: Serving and measuring ads, crash reporting, analytics, and core puzzle game functionality.
• Third-party SDKs: Google AdMob (privacy policy), Meta Audience Network (privacy policy), Firebase Crashlytics, Firebase Analytics, Firebase Performance Monitoring (privacy policy), Microsoft Clarity (privacy policy).

13. Data & Account Deletion

Most of my apps do not create server-side user accounts. Game progress, scores, preferences, and saved designs are stored locally on your device. To delete locally stored data, simply uninstall the app or clear the app data from your device settings.

Mathematica offers optional account creation via Google Sign-In, Apple Sign-In, or email. If you created an account:

• To request deletion: Email mail@bimql.link from the email address associated with your account with the subject "Account Deletion Request".
• What will be deleted: Your profile information (name, email, profile photo), authentication records, and any data stored in Firebase (Firestore, Storage).
• Processing time: I will process your request within 30 days of verification.
• What may be retained: Aggregated and anonymised crash logs and analytics data already collected by third-party SDKs (Firebase, AdMob, Microsoft Clarity) cannot be retroactively deleted, as they are not tied to identifiable user profiles in a way that allows individual removal. These are retained in de-identified form for stability monitoring and analytics.

For all other apps (Ludo Universe, Mehendi Designs, Engineering Mock Test, Forest Sudoku), no account exists to delete. If you have contacted me via email for support purposes, you may request deletion of our correspondence by emailing the address above.

14. Advertising

All five of my apps display advertisements via Google AdMob with Meta Audience Network (Facebook) as a mediation partner. Ludo Universe additionally uses Liftoff/Vungle and Unity Ads as mediation partners.

Ads may use your device's Advertising ID (on Android) or IDFA (on iOS) to deliver and measure ads. For Ludo Universe (child-directed), only non-personalized, G-rated ads are served, and interest-based advertising is disabled.

Opt-out options:

• Android: Open the Google Settings app → Ads → Opt out of Ads Personalization.
• iOS: Settings → Privacy & Security → Tracking → disable Allow Apps to Request to Track.
• Web: Visit https://adssettings.google.com and https://youradchoices.com to manage ad preferences.

15. Third-Party SDKs Used (Consolidated)

The following third-party SDKs are used across my apps. Each SDK processes data according to its own privacy policy.

16. Google Play Data Safety Alignment Note

The Data Safety section shown on each app's Google Play listing reflects only the data practices of that specific app. Because data collection varies between my apps (for example, Mathematica collects account data via Firebase Auth while Ludo Universe collects none), each app has its own Data Safety declaration that aligns with its actual features and SDK integrations.

For app-specific details on what data an app collects and how it is used, please refer to the Data Safety section on that app's Google Play Store page, or the app-specific sub-sections in Section 12 above.