Privacy Policy
Last Updated: December 2, 2025
Introduction
Companion for J-6 ("we", "our", or "the App") is a MIDI controller application designed for use with the Roland J-6 Chord Synthesizer. This Privacy Policy explains how we collect, use, and protect your information when you use our application.
Information We Collect
Information You Provide
- App Settings: MIDI channel configurations, BPM settings, and theme preferences that you configure within the app.
Automatically Collected Information
- Crash Reports: If the app crashes, we may collect diagnostic information to help us fix bugs and improve stability.
- Usage Analytics: Anonymous usage statistics to understand how the app is used and to improve features.
Information We Do NOT Collect
- Personal identification information (name, email, phone number)
- Location data
- Contact information
- Audio recordings or musical content
- MIDI data or musical performances
How We Use Your Information
We use the collected information to:
- Save your app preferences locally on your device
- Improve app stability and performance
- Understand usage patterns to enhance features
Data Storage
Local Storage
All app settings (MIDI channels, BPM, theme preferences) are stored locally on your device using SharedPreferences. This data:
- Never leaves your device
- Is not transmitted to any server
- Can be deleted at any time through the app's settings
Analytics and Crash Reporting
We use Firebase Crashlytics and Firebase Analytics to:
- Monitor app stability
- Collect anonymous usage statistics
This data is processed by Google Firebase in accordance with Google's Privacy Policy.
Third-Party Services
| Service | Purpose | Privacy Policy |
|---|---|---|
| Firebase Crashlytics | Crash reporting | Firebase Privacy |
| Firebase Analytics | Usage analytics | Firebase Privacy |
MIDI Communication
The App communicates with MIDI devices (such as the Roland J-6) via USB MIDI connection.
This communication occurs entirely on your device. No MIDI data is transmitted to external servers.
Children's Privacy
The App is not directed at children under the age of 13. We do not knowingly collect personal information from children under 13.
Data Retention
- Local Settings: Retained on your device until you clear app data or uninstall the app
- Crash Reports: Retained by Firebase for 90 days
- Analytics Data: Retained by Firebase according to their data retention policies
Your Rights
You have the right to:
- Access: View your settings within the app
- Delete: Clear all stored data via Settings > Data Management > Delete Saved Data
- Opt-out: Disable analytics in your device settings
Changes to This Policy
We may update this Privacy Policy from time to time. We will notify you of any changes by:
- Updating the "Last Updated" date at the top of this policy
- Displaying a notice in the app (for significant changes)
Contact Us
If you have any questions about this Privacy Policy, please contact us at:
Email: fufabu.dev@gmail.com
Summary
| Data Type | Collected | Stored Where | Shared |
|---|---|---|---|
| App Settings | Yes | Device only | No |
| MIDI Data | No | - | No |
| Personal Info | No | - | No |
| Crash Reports | Yes | Firebase | |
| Usage Analytics | Yes | Firebase |