Privacy Policy — Sleep Calculations App

1. Introduction

Welcome to the Sleep Calculations mobile app ("we," "our," or "us"). We are committed to protecting your privacy. This Privacy Policy explains how we collect, use, and safeguard information when you use the Sleep Calculations app.

2. Information We Collect

The Sleep Calculations app is designed to work with minimal data collection:

• Calculator Inputs: Sleep time values you enter (bedtime, wake time, sleep cycles) are processed directly on your device to generate results. These inputs are not transmitted to or stored on our servers.
• Advertising Identifiers: We use Google AdMob to display advertisements within the app. AdMob may collect device identifiers (such as the Android Advertising ID), IP address, and general device information to serve and measure ads, including personalized ads based on your interests.
• App Diagnostics & Usage Data: We use Firebase (Google) to collect anonymous crash reports and general app usage data (such as screens viewed, session length, and device/OS type) to help us fix bugs and improve the app experience.

We do not require account creation, and we do not knowingly collect your name, email address, or other directly identifying information through the app itself.

3. Google AdMob and Advertising

This app uses Google AdMob to display ads. AdMob may use your Advertising ID and other device data to show ads, including personalized ads based on your app usage and interests across other apps and websites.

You can:

• Opt out of personalized advertising via your device's ad settings (Android: Settings → Google → Ads → "Opt out of Ads Personalization"; iOS: Settings → Privacy → Tracking).
• Learn more about Google's advertising practices at policies.google.com/technologies/ads.

4. Third-Party Services

This app uses the following third-party services, each governed by its own privacy policy:

• Google AdMob — for displaying advertisements
• Firebase (Google) — for anonymous crash reporting and app usage analytics

5. Data Security

We take reasonable measures to protect any data processed by the app. We do not sell, trade, or transfer your personal information to third parties, other than as required for the advertising and analytics services disclosed above.

6. Children's Privacy

This app is not directed at children under the age of 13. We do not knowingly collect personal information from children under 13. If you believe a child has provided information through this app, please contact us so we can address it.

7. Your Rights

You have the right to request access to, correction of, or deletion of any personal information we may hold about you. To exercise these rights, contact us at sleepcalculationsapp@gmail.com.

8. Changes to This Policy

We may update this Privacy Policy periodically to reflect changes in the app, legal requirements, or our advertising/analytics practices. Updates will be posted on this page with a revised effective date.

9. Contact Us

If you have questions about this Privacy Policy or the Sleep Calculations app, contact us at: sleepcalculationsapp@gmail.com