All of them: Navidrome and every OpenSubsonic server, Plex, Jellyfin, Emby, local files and Apple Music. The CarPlay library is the same merged library as on the phone.
Features
Your music server on CarPlay
RoadSonic was designed for the car first. The CarPlay interface shows exactly what you need while driving — and keeps playing through tunnels thanks to a verified reserve of complete tracks on the iPhone.
Four tabs, no nested menus
Listen shows recently played, favorites and the Radio. Artists and Albums browse your merged library with a letter index. Find searches the on-device index. Everything is one or two taps away, with large targets and artwork.
Keeps playing where the signal doesn't
Before you leave, the “Ready for the road” badge confirms that 20 to 60 minutes of complete tracks are on the iPhone. While you drive, the next tracks download ahead and the app falls back to what is already on the device before silence ever happens.
A sound profile for the car
The 10-band equalizer and loudness normalization keep a separate profile for CarPlay, recalled automatically when you connect. Gapless albums and crossfade work in the car exactly as on headphones.
Frequently asked questions
It appears automatically once installed. If it does not, check iOS Settings › General › CarPlay › your car › Customize and add RoadSonic.
Yes. “Play Depeche Mode”, “Play my favorites”, “Start the radio”, “Like this track” all work through Siri and CarPlay.
Go deeper
Offline, verified, never silent
Streaming from your own server is great until the network drops. RoadSonic treats offline as the normal case: a pinned reserve, resumable album downloads and an on-device index that never needs the server to answer.
→Synchronized lyrics and karaoke
RoadSonic shows the words of what you are playing, synchronized with the music, and turns any track into a karaoke session — from your own files, not from a streaming catalog.
→Sound you control, per output
The same album should not sound the same on the car speakers and on in-ear headphones. RoadSonic keeps a separate sound profile for every output and recalls it automatically.
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Free to try, yours forever
Download for free and enjoy a full 7-day trial that starts after your first library sync. Then a single one-time purchase unlocks RoadSonic for good. No subscription, no ads.