Privacy Policy – Maths Calculation Practice
In short: Maths Calculation Practice is a free educational app for practising tables, squares, cubes, percentages and real-life maths. There is no login and no account. We do not ask for your email, phone number, location, contacts or photos. Your practice progress is saved only on your own phone. The app shows optional rewarded video ads from Google AdMob. Google may collect some device data to show these ads, as explained below.
This Privacy Policy explains how the Android app “Maths Calculation Practice” (the “App”), developed by Shubham Badal (“we”, “us” or “our”), handles information when you use the App. By installing or using the App, you agree to this Privacy Policy. If you do not agree, please do not use the App.
1. Information we collect
1.1 Information you give us
We do not require you to register, log in or give any personal information to use the App.
- Optional first name: the App may ask for a first name to greet you (for example, “Hi, Officer!”). This is optional. You can skip it, and the App then uses the default name “Officer”. The name is stored only on your device and is never sent to us or to anyone else.
1.2 Information stored only on your device
To make the App work, it saves the following locally on your phone (in the App’s private storage):
- Your practice preferences (topics and ranges you choose)
- Your progress: level, XP, streak, scores, accuracy, speed and questions you got wrong (weak spots)
- App settings such as sound, vibration and theme (light/dark)
This data never leaves your device. We do not have servers that collect it, and we cannot see it. It is removed when you use “Reset all progress” in the App, clear the App’s data in Android settings, or uninstall the App.
1.3 Information collected automatically by third parties (ads)
The App uses Google AdMob to show optional rewarded video ads (for example, “Watch ad & Resume” when you run out of lives). To serve and measure ads and to prevent fraud, Google may automatically collect and process information such as:
- Device identifiers, including the Android Advertising ID
- IP address and approximate (coarse) location derived from it
- Device and app information (device model, operating system version, language, app version)
- Ad interactions (for example, whether an ad was loaded, shown or completed)
- Diagnostic data such as crash logs and performance data related to ads
We do not collect this information ourselves, and we cannot use it to identify you. Google processes it under its own privacy policy:
- Google Privacy Policy: https://policies.google.com/privacy
- How Google uses information from apps that use its services: https://policies.google.com/technologies/partner-sites
- Google AdMob and advertising: https://policies.google.com/technologies/ads
2. How information is used
- Data on your device is used only to run the App: to remember your settings, generate questions from your chosen topics, track your level, XP and streak, and show your progress.
- Data processed by Google AdMob is used by Google to show rewarded ads, measure ad performance, limit how often ads appear, and prevent ad fraud. Depending on your settings and location, ads may be personalised or non-personalised.
We do not use any information for profiling, and we do not sell, rent or trade any personal information.
3. Sharing of information
We do not share any personal information with anyone. The only third-party service in the App is:
| Service | Purpose | Privacy policy |
|---|---|---|
| Google AdMob (Google LLC) | Showing optional rewarded video ads | policies.google.com/privacy |
| Google Play Services (Google LLC) | App delivery and the Advertising ID used by AdMob | policies.google.com/privacy |
We may disclose information only if required by law, but since we do not collect or store personal information on any server, we have nothing to disclose.
4. Advertising and your choices
- Ads are optional. Ads appear only when you choose “Watch ad & Resume”. You can always choose “Learn Again” or “End session” instead.
- Consent: where required by law (for example, for users in the European Economic Area, the UK or Switzerland), the App shows Google’s consent form before ads are personalised. You can change your choice later from the App, if the option is shown.
- Limit personalised ads on Android: open Settings → Google → Ads (or Settings → Privacy → Ads, depending on your phone) and choose Delete advertising ID or Opt out of Ads Personalisation.
- Learn more about Google ad settings at https://adssettings.google.com.
5. App permissions
The App asks for only these Android permissions. None of them gives us access to your personal files, camera, microphone, contacts or location.
| Permission | Why it is needed |
|---|---|
| Internet / Network state | To load optional rewarded ads. The rest of the App works fully offline. |
| Vibrate | Short vibration feedback for correct or wrong answers (you can turn this off in Settings). |
| Advertising ID (AD_ID) | Used by Google AdMob to serve and measure ads. |
6. Children’s privacy
The App is an educational tool designed for students and competitive exam aspirants (such as SSC, Banking, Railways and Police exams). It is not directed at children under 13. We do not knowingly collect personal information from children under 13. Because the App has no login and stores progress only on the device, we do not collect personal information from any user. If you are a parent or guardian and believe a child has provided personal information through the App, contact us at baadalgroups21@gmail.com and we will help.
7. Data retention and deletion
- On-device data stays on your phone until you delete it. To delete it: use Settings → Reset all progress in the App, or go to Android Settings → Apps → Maths Calculation Practice → Storage → Clear data, or uninstall the App.
- Ad-related data held by Google is kept according to Google’s retention policies. You can manage or reset it through your Google account and Android ad settings described above.
- Because we do not store your data on any server, there is no account to delete. If you have any question about your data, email us.
8. Data security
Your progress data is stored in the App’s private storage on your device, which other apps cannot access. Ad data sent by the Google AdMob SDK is encrypted in transit (HTTPS). No method of storage or transmission is 100% secure, but we use the protections Android and Google provide and collect as little information as possible.
9. Your rights
Depending on where you live, you may have rights over your personal data, such as the right to access, correct, delete or object to its processing. This includes rights under India’s Digital Personal Data Protection Act, 2023, the EU/UK GDPR and US state privacy laws (such as the CCPA/CPRA). Because the App keeps your data only on your device, you can view, change or delete it at any time inside the App. For data processed by Google for ads, you can use Google’s tools linked above. For any other request, contact us at baadalgroups21@gmail.com. We will reply within 30 days.
10. International users
The App is published from India and can be used worldwide. Information processed by Google AdMob may be processed on Google’s servers in India or other countries, under Google’s privacy policy and safeguards.
11. Links to other websites
Ads or links in the App may lead to websites or services run by others. We are not responsible for their content or privacy practices. Please read their privacy policies.
12. Changes to this Privacy Policy
We may update this Privacy Policy from time to time, for example when we add new features or when laws change. We will post the updated version on this page and change the “Last updated” date above. Please check this page from time to time. Continuing to use the App after changes means you accept the updated policy.
13. Contact us
If you have any questions, suggestions or requests about this Privacy Policy or the App, please contact:
Shubham Badal
Developer, Maths Calculation Practice
Email: baadalgroups21@gmail.com
Delhi, India
