Android Call Tracking App Enhancement

I'm looking to enhance our existing V1 Android app with automatic call recording capabilities. The app currently features call logging, offline mode with sync, an agent scorecard, in-app notes, lead matching, analytics, and notifications.

Requirements:
- Implement automatic call recording for all calls (incoming & outgoing)
- Link recordings directly to lead details for easy access
- Ensure offline sync includes recordings
- Optimize the app using Java or Kotlin
- Provide clean, well-documented code

Deliverables:
- Working APK with call recording functionality
- Source code and documentation
- Backend API integration guide (using Laravel)

Ideal Experience:
- Developing Android call recording apps
- Handling background services and permissions
- Managing offline data synchronization

Please provide your timeline and quote.