Everything you need to know about CarJam — the free virtual aux cord that lets everyone in the car pick the music. No login, no ads, no downloads.
CarJam is a free virtual aux cord web app. It lets a group of people add songs to a single shared music queue from their own phones — no passing the phone around, no cables needed.
The host opens CarJam on the device connected to the car speaker, shares a 6-letter room code, and everyone in the car can search and add songs from their own phone in real time.
Yes. CarJam runs entirely in your browser and cannot access your files, contacts, camera, or microphone. It uses Firebase — Google's infrastructure — for real-time sync between devices.
No executable files, no APKs, no browser extensions. It's a standard website that happens to work like an app.
No account needed. CarJam uses Firebase Anonymous Authentication, which creates a temporary session ID automatically in the background. It never asks for your name, email, or password.
Your identity is 100% private. The only data stored is the song queue and party settings, which are automatically deleted 24 hours after the party ends.
No ads. No downloads. CarJam is a Progressive Web App (PWA) that runs directly in your browser. There are no trackers, no data sales, and no intrusive ads.
You can optionally install it to your home screen for a native app experience — it adds an icon and loads faster, but it's completely optional.
Yes. CarJam uses YouTube for playback, so no Spotify, Apple Music, or any other subscription is needed. Search any song directly in the app, paste a YouTube URL, or import an entire YouTube playlist.
YouTube Premium on the host device is recommended for ad-free playback, but not required.
On Android, CarJam uses Picture-in-Picture and a persistent audio session to keep music playing when you switch apps or lock the screen.
For the most reliable background playback: install CarJam to your home screen (tap "Add to Home Screen" in your browser menu) and set Chrome's battery usage to "No restrictions" in your phone settings. This tells Android not to suspend the app.
On iOS, background audio from web apps is limited by Apple — this is a platform restriction, not a CarJam bug.
CarJam is a passion project by Unloko897. It has no ads and does not sell any data. It is supported entirely by optional community donations.
If CarJam saved you from an aux cord argument, consider buying the dev a coffee on Ko-fi ↗.
The host controls what plays. Guests can add songs to the queue and vote to skip the current song (majority rules). The host can also optionally allow guests to pause and resume playback in the Settings panel.
The host can also set per-guest queue limits, maximum song lengths, and block duplicate songs.
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