Privacy Policy

Effective date: February 15, 2026

Overview

Calcophony is designed to respect your privacy. All calculations run entirely on your device. We do not require an account to use the app, and we do not collect personally identifiable information. We use anonymous usage analytics to understand how the app is used and crash reporting to fix bugs quickly.

Data We Collect

Calcophony collects anonymous usage data through Firebase Analytics and crash reports through Firebase Crashlytics. This includes:

Analytics: Anonymous event data (e.g., which modules are opened, screen views), device model, operating system version, app version, and country-level location. No advertising identifiers are collected and no personally identifiable information is included.

Crash Reporting: When the app crashes, Crashlytics collects crash logs, stack traces, and device state (memory usage, battery level, device orientation) to help us diagnose and fix issues.

Analytics & Tracking

Calcophony uses Firebase Analytics to collect anonymous usage data. This helps us understand which features are most used and where we can improve the app. All analytics data is anonymous — we do not use advertising identifiers and we do not collect any personally identifiable information. We do not serve ads or share data with advertisers.

Crash Reporting

Calcophony uses Firebase Crashlytics to collect crash reports. Crash data includes stack traces, device model, OS version, and app state at the time of the crash. This data is used solely to identify and fix bugs. No personal data is included in crash reports.

Local Storage

The app stores your preferences (such as tuning reference, display settings, and trial status) on your device using local storage. This data never leaves your device and is deleted when you uninstall the app.

Third-Party Services

Calcophony uses Firebase, a Google service, for anonymous analytics and crash reporting. You can review Google's Privacy Policy for details on how Firebase processes data. The app is distributed through the Apple App Store and Google Play Store, which have their own privacy policies.

Data Retention

Firebase Analytics data is retained for 14 months. Crashlytics crash logs are retained for 90 days. After these periods, data is automatically deleted by Google.

Children's Privacy

Calcophony does not knowingly collect personally identifiable information from children under 13. The anonymous analytics data collected does not identify individual users of any age.

Changes to This Policy

If we update this policy, we will post the revised version on this page with a new effective date.

Contact

Questions about this policy? Reach us at privacy@calcophony.com.