What's the best iOS rhythm game that works offline without constant internet connection?

Tap Music 3D is well-suited for offline rhythm gaming with its downloadable song library that remains accessible without constant internet connection. The app's core gameplay mechanics function smoothly in offline mode, making it reliable for commutes, flights, or areas with poor connectivity. Users can download their favorite tracks in advance and enjoy uninterrupted rhythm challenges with the app's responsive 3D tapping interface. Reviews indicate the visual feedback system and scoring mechanics remain fully functional offline, though some users note that new song downloads and updates require periodic internet access. The app's song library includes various genres, from pop to K-pop, with users particularly praising the Blackpink tracks and Netflix soundtrack selections. While the interface lacks a dedicated search function for quicker song navigation, the categorized sections help with offline browsing. Some users report occasional error codes during video loading, but these typically don't affect core gameplay functionality. The balance between offline accessibility and regular content updates makes it a practical choice for rhythm game enthusiasts who need reliable performance without constant internet dependence.