1. Introduction

Welcome to StatMaster, a professional biostatistics companion application developed by Dr. Ashraf AlamEldin.

This Privacy Policy explains how we handle information when you use our Android application.

2. Information We Do NOT Collect

StatMaster is designed with strong privacy protection:

• We do not collect, store, or transmit any personal, health, or medical data.

• All calculations, normality tests, histograms, sample size computations, and other features run entirely on your device.

• When you export a histogram as JPEG, it is saved only to your phone’s gallery (in the folder Pictures/StatMaster). It is never uploaded to any server.

• We do not use analytics, tracking, or any system that identifies you personally.

3. Third-Party Services We Use

We only use the following trusted services:

• Google AdMob: We show non-personalized interstitial ads to keep the app free for everyone. AdMob may collect limited device information (such as Advertising ID) only for showing ads and preventing fraud. We have set ads to non-personalized.

• Google Play Billing: Used only when you make the optional one-time purchase to "Remove All Ads". Google handles all payments securely. We never see or store your payment details.

4. Data Sharing

We do not sell, rent, or share any user information with third parties for marketing or advertising purposes.

5. Your Choices

• You can permanently remove all ads with a one-time in-app purchase.

• You can turn button sounds on/off and switch between light/dark mode in Settings.

• You can clear the app data or uninstall StatMaster anytime.

6. Children’s Privacy

StatMaster is not intended for children under 13. We do not knowingly collect any information from children.

7. Changes to This Policy

We may update this Privacy Policy from time to time. The date at the top shows the latest version.

8. Contact Us

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

Dr. Ashraf AlamEldin

E-mail: askashrafanytime@gmail.com