Last Updated: January 13, 2026
Overview
Sierra Digital Holdings (“we”, “our”, or “us”) operates mobile applications and digital services under the Sierradh.com brand. This Privacy Policy explains how we collect, use, and safeguard your information when you use any of our applications.
Information We Collect
Information You Provide
- Feedback & Support Data: When you submit feedback or support requests through our apps, we collect your name, email address, and message content to respond to your inquiries.
- User-Generated Content: Data you create and save within our apps (such as calculations, scenarios, or preferences) is stored locally on your device unless otherwise specified.
Automatically Collected Information
- Analytics Data: We use Firebase Analytics to collect anonymous usage data including app interactions, screen views, and feature usage patterns. This helps us improve the app experience.
- Crash Reports: We use Firebase Crashlytics to collect crash logs and diagnostic information when errors occur. This data helps us identify and fix technical issues.
- Device Information: We may collect device type, operating system version, and app version for analytics and troubleshooting purposes.
How We Use Your Information
We use the collected information to:
- Respond to your feedback and support requests
- Improve app functionality and user experience
- Identify and fix bugs and crashes
- Analyze usage trends to guide feature development
Data Storage & Security
- Local Data: User-generated content is stored locally on your device using encrypted storage where applicable.
- Cloud Data: Feedback and support submissions are stored securely in Google Firebase (Firestore) with industry-standard encryption.
- Analytics: Anonymous analytics data is processed by Google Firebase in accordance with Google’s privacy policies.
Third-Party Services
Our apps may use the following third-party services:
- Firebase Analytics – Usage analytics (Google Privacy Policy)
- Firebase Crashlytics – Crash reporting (Google Privacy Policy)
- Firebase Firestore – Data storage (Google Privacy Policy)
Your Rights
You have the right to:
- Request deletion of your personal data by contacting us
- Opt out of analytics by disabling it in your device settings
- Delete locally stored data by uninstalling the app
Children’s Privacy
Our apps are not intended for children under 13. We do not knowingly collect personal information from children under 13.
Changes to This Policy
We may update this Privacy Policy periodically. We will notify you of any changes by updating the “Last Updated” date at the top of this page.
Contact Us
If you have questions about this Privacy Policy, please contact us at:
Sierra Digital Holdings
Email: contact@sierradh.com
Website: sierradh.com