Privacy Policy for Calculator

Moniruzzaman Shadhin built the Calculator app as a free app. This service is provided by Moniruzzaman Shadhin at no cost and is intended for use as is. This page is used to inform visitors about our policies regarding the collection, use, and disclosure of information if anyone decides to use this app.

1. Information collection and use

The Calculator app does not require you to create an account or provide any personally identifiable information. 

Data stored on your device only: 

The app may store the following data locally on your device:

• Calculation history – expressions and results you enter, with timestamps, so you can review past calculations. This data is kept only on your device and is not sent to any server.

• App settings – such as whether vibration and sound effects are enabled. These preferences are stored only on your device.

No registration data, photos, documents, or other personal information are collected or sent to us or any third party.

2. Permissions

The app may request the Vibrate permission so it can provide optional haptic feedback when you tap keys. Vibration is optional and can be turned off in the app settings. No other sensitive permissions are required for core calculator functionality.

3. Third‑party services

This app does not use Google Play Services, Google Analytics, Firebase (including Crashlytics), or other third‑party analytics or advertising SDKs.

If such services are added in the future, this policy will be updated and their privacy policies will be linked here.

4. Log data and diagnostics

We do not intentionally collect your IP address or other identifying information through the app. 

If you install the app via Google Play, Google may provide us with limited, anonymized crash or error information (e.g., device type, Android version) through the Play Console. We do not use this to identify you personally.

5. Security

We do not collect or transmit your personal information. Calculation history and settings are stored only on your device. Please note that no method of transmission over the internet or electronic storage is 100% secure.

6. Children’s privacy

These services are not directed at anyone under the age of 13. We do not knowingly collect personally identifiable information from children under 13.

7. Changes to this policy

We may update this Privacy Policy from time to time. You are advised to review this page periodically for any changes.

8. Contact

If you have any questions or suggestions about this Privacy Policy, you can contact us at shadhinemail@gmail.com.

Privacy Policy for My Deen Android app

Moniruzzaman Shadhin built the My Deen app as a free app. This SERVICE is provided by Moniruzzaman Shadhin at no cost and is intended for use as is. This app does not contain advertisements.

This page is used to inform visitors about my policies regarding the collection, use, and disclosure of information if anyone decides to use my Service.

If you choose to use my Service, you agree to the collection and use of information in relation to this policy. The information that I collect is used to provide and improve the Service. I will not use or share your information with anyone except as described in this Privacy Policy.

Information collection and use

For prayer times, Qibla direction, and related features, the app may use and store location data (e.g. latitude, longitude, and a location name). This information is stored only on your device and is not collected or sent to my servers. You can use your device’s location or choose a custom location in the app. Location is used solely to calculate prayer times and Qibla direction.

The app also stores preferences on your device (e.g. prayer calculation method, notification and alarm settings, language). This data remains on your device and is not collected by me.

The app uses third-party services that may collect information used to identify your device or to improve the service:

• Google Play Services (e.g. for location when you allow it)

[Link to Google Privacy Policy: https://policies.google.com/privacy]

• Firebase (Google)

• Firebase Remote Config (e.g. to deliver app configuration such as update prompts and Quran page URL)

• Firebase Crashlytics (to collect crash reports and improve app stability)

[Link to Firebase Privacy: https://firebase.google.com/support/privacy]

Log data

When the app encounters an error, third-party services (such as Firebase Crashlytics) may collect data on your device, which can include your device’s Internet Protocol (“IP”) address, device type, operating system version, app configuration at the time of the error, and the time and date of the event. This data is used to fix crashes and improve the app.

Cookies

This app does not use “cookies” in the traditional sense. The Quran feature may load content from external websites (e.g. quran.com) in an in-app browser; those sites may use their own cookies or similar technologies. Their use is governed by their respective privacy policies.

Service providers

I may use third-party companies and individuals to:

• Provide or support the Service (e.g. hosting, analytics, crash reporting)

• Perform services related to the Service

• Help analyze how the Service is used

These third parties may have access to device-related or usage-related information necessary to perform their functions. They are required to use that information only for those purposes and not to disclose or use it for other purposes.

Security

I aim to protect your information using commercially reasonable measures. However, no method of transmission over the Internet or electronic storage is 100% secure, and I cannot guarantee absolute security.

Links to other sites

The Service may contain links to other sites (for example, when using the Quran feature). If you follow a third-party link, you will be subject to that site’s terms and privacy policy. I do not control and am not responsible for the content, privacy policies, or practices of third-party sites or services.

Children’s privacy

This Service is not directed at anyone under the age of 13. I do not knowingly collect personally identifiable information from children under 13. If you believe a child under 13 has provided personal information through the app, please contact me and I will take steps to delete such information.

Changes to this privacy policy

I may update this Privacy Policy from time to time. You are advised to review this page periodically. I will notify you of any material changes by posting the updated Privacy Policy on this page.

This policy is effective as of 2025-02-14.

Contact

If you have any questions or suggestions about this Privacy Policy, you can contact me at shadhinemail@gmail.com.

Privacy Policy for Charkalia Reunion 2026 app

Privacy Policy for Charkalia Reunion 2026

Moniruzzaman Shadhin built the Charkalia Reunion 2026 app as a Free app. This SERVICE is provided by Moniruzzaman Shadhin at no cost and is intended for use as is. This page is used to inform visitors regarding my policies with the collection, use, and disclosure of Personal Information if anyone decided to use my Service.

1. Information Collection and Use

For a better experience, while using our Service, I may require you to provide us with certain personally identifiable information for registration purposes, including but not limited to:

• Registration Data: Name, Batch, and Contact Details to verify your alumni status.

• Camera & Gallery: Used to capture or upload profile photos and payment receipts.

• Storage Access: Used to upload or save documents related to the reunion application.

2. Third-Party Services

The app does use third-party services that may collect information used to identify you. You can find their privacy policies here:

• Google Play Services

• Google Analytics for Firebase

• Firebase Crashlytics

3. Log Data & Cookies

• Log Data: In case of an error in the app, I collect data (through third-party products) called Log Data. This includes your device IP address, device name, operating system version, and the time/date of your use.

• Cookies: This app does not use "cookies" explicitly. However, third-party libraries used by the app may use them to improve their services.

4. Security

I value your trust in providing us your Personal Information, thus we are striving to use commercially acceptable means of protecting it. However, no method of transmission over the internet is 100% secure.

5. Children’s Privacy

These Services do not address anyone under the age of 13. I do not knowingly collect personally identifiable information from children under 13.

6. Changes to This Policy

I may update our Privacy Policy from time to time. You are advised to review this page periodically for any changes.

7. Contact Us

If you have any questions or suggestions about my Privacy Policy, do not hesitate to contact me at shadhinemail@gmail.com.