Sonic Playlist Keeper

Sonic Playlist Keeper is a music catalog app built for people who care about how their playlists are organized. No account required, no internet connection needed — everything lives on your device.

The app lets you label each playlist with genres, moods, and themes using a flexible tag system. Add personal notes to any playlist to capture the story behind it, a feeling it evokes, or simply a reminder of why you built it.

Themes are available in both light and dark variants so the app fits your preference at any time of day. Font size options make reading comfortable across different screen sizes. The home screen uses a card grid layout — each section is just one tap away.

All data is stored locally. Nothing is synced, nothing is uploaded. Your catalog is yours alone.