SyncTax is an offline-first Android music player and recommender app that demonstrates privacy-preserving, on-device personalization and compact ML models. It combines a modern Android UI with background playback, local-first data storage, and a lightweight hybrid recommendation engine that uses Kotlin-based agents and an optional Python model via Chaquopy.

→ 136 MB APK | Android 10+ | Material 3 Design

Highlights

• Offline-first playback and recommendations
• Background audio with low battery impact
• Lightweight on-device personalization powered by Kotlin agents and a Python-based model (Chaquopy)
• Local media support (MP3/OGG/FLAC) alongside searchable YouTube frontends
• Clean Material 3 UI and modular architecture suitable for experimentation

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App screenshots

Below are screenshots showcasing the app's UI and key features, from initial setup through personalized recommendations.

1) Brand & Hero

2) Onboarding Flow

3) Search, Streaming & Lyrics

4) Discovery & Quick Picks

5) Library Experience

6) Controls + Intelligence

7) Playlists + Sharing

View full image gallery

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Thanks for checking out SyncTax — contributions and feedback are welcome!