AI strips the vocals, syncs the lyrics to your TV, and turns every phone into a remote.
Limited launch pricing
$19.99
$49.99
Save 60%
5 songs free · no signup · no card
One-time purchase · Works offline · Mac, Windows, Linux
250+ singers · no subscription
The magic
This is exactly what Beltr does to any song you own, in real time.
♫ “Beltr” — original theme song
One library
AI-made tracks and CDG karaoke discs in the same library. Export the whole thing to any karaoke machine.
Drop in MP3+G or CDG zips. They sit next to your AI tracks, marked so you can tell them apart.
Export to MP3+G. Burn it, USB it, drop it on the hardware karaoke in the basement.
Every screen in sync
Lyrics light up the TV while everyone steers from their phone: queue songs, fade the vocals, fire off reactions. All in sync, in real time.
The features
01 · AI separation
Drop any MP3 you own. Beltr's on-device AI strips the vocals in about 30 seconds. No upload, no cloud, no waiting. Your whole library, karaoke-ready.
02 · The big screen
Word-by-word synced lyrics on your TV, with a countdown into every line and live pitch scoring. The living room becomes the stage.
03 · Everyone plays
Scan a QR code to join in seconds. Queue songs, fade the vocals, fire off reactions, and watch your score climb. Everyone runs the night from their own phone.
No subscription
KaraFun runs $13 a month. Beltr is $19.99, one time. It pays for itself in about six weeks, then it's free for life.
| Beltr | Subscriptions | YouTube | |
|---|---|---|---|
| Monthly cost | $0 forever | $7–13/mo | Free, with ads |
| Your own music | Any MP3 you own | Their catalog | Hit or miss |
| Works with karaoke machines | Yes — MP3+G in & out | No | No |
| Works offline | Yes | No | No |
| Phone remotes | Any phone | Some | No |
| Live scoring | Yes | Some | No |
| Price | $19.99 once | $80–160/yr | Free (limited) |
“Just paid for another month of KaraFun… I'm VERY interested in your app. Keep going!”
— r/karaoke“Paid for the app this morning. Love being able to send hype to the screen during a performance — that's been on my list for a long time. I can see value in this!”
— r/karaoke“Can't wait to try this out 🤘”
— r/karaokeOn the big screen
Four ways to the big screen. HDMI is always best.
🎤 Scoring tip: the mic plugs into the computer running Beltr's display. With HDMI that's automatic, which is why it's the best setup.
Plug the Beltr computer into your TV's HDMI port and go fullscreen. Zero latency, best audio, and the mic's on the same machine, so scoring just works.
Open Beltr's TV address in your television's built-in browser over Wi‑Fi, no cable. Most TV browsers have no mic input, so scoring won't work. Great for lyrics-only nights.
Mirror a Mac to an Apple TV or AirPlay 2 TV. Fully wireless, with a little lag. The mic stays on the Mac, so scoring still works.
Cast the Beltr tab from the host computer to a Chromecast or Google TV. Wireless and convenient, same lag caveat. Mic stays on the computer, scoring works.
Get Beltr
Five songs free to start. Pay once when you're hooked. $19.99, forever.
Windows without the Store? Download the .exe installer · triggers SmartScreen
Limited launch pricing
$49.99 $19.99 Save 60% — one-time, forever
5 free songs included. No subscription, ever.
Mac, Windows & Linux · 8 GB RAM minimum · ~2 GB disk for the AI model.
Microsoft Store is the recommended install: no SmartScreen, auto-updates, one click. Using the .exe? If SmartScreen warns, click “More info” → “Run anyway”.
AppImage needs libfuse2. On Ubuntu 22.04+: sudo apt install libfuse2, or use the .deb.