# Privacy Policy

**Effective Date:** April 21, 2026  
**Last Updated:** April 21, 2026

## 1. Introduction
Welcome to **ShaplaChottor** (the "App"). We are committed to protecting your personal information and your right to privacy. This Privacy Policy explains how we collect, use, and safeguard your data when you use our mobile application.

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## 2. Information We Collect
We collect information that you provide directly to us or through third-party authentication services:

- **Account Data:** When you sign in via Google, we receive your name, email address, and profile picture.
- **Contact Information:** For booking a classroom seat or training phase, we collect your **Phone Number** and **WhatsApp Number** for verification purposes.
- **Learning Progress:** We store your learning progress, including unlocked modules and completed lessons, to provide a continuous educational experience.
- **Device Information:** We may collect limited technical information such as device model and operating system version strictly for app functionality, debugging, and performance optimization. We do not use this data for tracking or advertising purposes.

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## 3. How We Use Information
We use your data strictly for app functionality:

- To provide and maintain the service (account management and learning progress)
- To verify bookings using your phone or WhatsApp number
- To communicate with you regarding bookings or account-related issues
- To improve app performance using limited, non-personal analytics

We do **not** use your data for advertising, profiling, or selling to third parties.

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## 4. Google Sign-In & Firebase Usage
Our app uses Google services:

- **Authentication:** Login is handled securely via Google Sign-In. We do not access or store your Google password.
- **Backend Services:** Your data is stored in Firebase (Firestore), a secure cloud service provided by Google.
- **Security:** These services follow industry-standard security practices.

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## 5. Data Storage and Security
We take appropriate measures to protect your data:

- **Storage:** Data is stored securely in Firebase cloud infrastructure
- **Access Control:** Firestore Security Rules restrict access to authorized users only
- **Encryption:** Data is encrypted during transmission

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## 6. Data Sharing and Third Parties
- We do **not sell, trade, or rent** your personal data
- Data is shared only with essential service providers (e.g., Google/Firebase) to operate the app
- We may disclose data if required by law

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## 7. User Rights
You have the right to:

- **Access:** Request a copy of your data
- **Correction:** Update inaccurate information
- **Deletion:** Request deletion of your account and all associated data

To request account or data deletion, please contact us through our website. We will process your request within a reasonable timeframe.

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## 8. Children's Privacy
This app is not intended for children under the age of 13. We do not knowingly collect data from children. If such data is discovered, it will be deleted.

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## 9. Data Retention
We retain user data only as long as necessary:

- Account and learning data are stored while your account is active
- Booking-related data is retained for operational purposes
- Upon request, your data will be deleted unless legally required to retain it

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## 10. Changes to This Policy
We may update this Privacy Policy periodically. Updates will be posted here with a revised "Last Updated" date.

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## 11. Contact Information
If you have any questions or want to request data deletion, contact us:

**ShaplaChottor AI Research Lab**  
**Website:** https://shaplachottor.com

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## 12. No Advertising or Tracking
We do not display ads and do not use third-party tracking technologies for advertising purposes.