Beltr — Turn Any Song Into Karaoke · $19.99 One-Time
New Beltr is now on Apple TV · plus iPhone, Android & Google TV

Drop it — Beltr. Connect it — Beltr. Sing it — Beltr.

Every song you own.
Karaoke night, tonight.

Turn any track on your computer into karaoke on your TV, with synced lyrics and phones as mics and remote. Buy once. No subscription. Nothing leaves your machine.

Download Free See Beltr in action ›

$49.99$19.99 Summer sale

One-time purchase  ·  no subscription, ever

5 songs free  ·  no signup  ·  no card

Works offline  ·  Mac, Windows, Linux

14-day refund  ·  built by one developer

The Beltr Remote app on iPhone — the Sing tab with synced lyrics, a live score and the room chat

The magic

Press play. Slide to kill the vocals.

This is exactly what Beltr does to any song you own, in about 30 seconds, on your machine.

OriginalVocals removed

  “Beltr” — original theme song

Now do it to your songs, free

5 songs free · no card · Mac, Windows & Linux · 700 MB–1 GB installer

One library

Every karaoke track you own. Together, finally.

AI-made tracks and CDG karaoke discs in the same library. Export the whole thing to any karaoke machine.

↘ Import

Bring your karaoke library in.

Drop in MP3+G or CDG zips. They sit next to your AI tracks, marked so you can tell them apart.

Export ↗

Send to any karaoke machine.

Export to MP3+G. Burn it, USB it, drop it on the hardware karaoke in the basement.

Every screen in sync

Your phone runs the room.

Lyrics light up the TV while everyone steers from their phone: queue songs, fade the vocals, fire off reactions. All in sync, instantly.

1 Drop your MP3s
→
2 AI removes vocals in 30s
→
3 Sing with friends

The features

Everything for the perfect night.

01 · Any song

Any song becomes karaoke.

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

Lyrics on the big screen.

Word-by-word synced lyrics glow on your TV, with a countdown into every line and a cinematic spotlight on the words. The living room becomes the stage.

Today you reach the TV over HDMI, casting, or its built-in browser. Native TV apps are live on both stores: Apple TV on the App Store and Android TV & Google TV on Google Play. Install Beltr right on the television and join your karaoke night with a single tap.

Get Beltr for Apple TV on the App Store Get Beltr for Android TV on Google Play
A room watching Beltr karaoke lyrics glow on the big screen over a concert backdrop

03 · Everyone plays

Every phone is a remote.

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. And with the free Beltr Remote app, on the App Store and Google Play, your phone is the microphone too.

04 · Live scoring

See the note. Hit the note.

A live pitch bar shows the note you're reaching for, and your score climbs line by line. Pass the mic around and let the leaderboard decide who really carried the chorus.

Beltr on a TV: the chant lit up word by word with a live pitch bar and a singer's score climbing

New · Free remote apps

Your phone is the mic.

Beltr Remote turns the phone already in your hand into the wireless microphone: sing into it, hear your voice through the room speakers, and watch your score climb on the TV. The free companion to Beltr, now on iPhone and Android.

Download Beltr Remote on the App Store Get Beltr Remote on Google Play
QR code to get the Beltr Remote app Scan to get the app

Practice room

Not just a party. Your private practice room.

When the crowd goes home, Beltr is how you actually get better. Pull up any song on your own and drill the part that keeps tripping you, with nobody watching.

  • Slow it down, keep the pitch

    Drop any song to 50% speed with no chipmunk effect, so you can finally hear the run before you have to sing it.

  • Loop the hard part

    Set A, set B, and the tricky eight bars repeat until they're muscle memory.

  • A private scoreboard

    Beltr tracks your weak lines across every attempt and keeps it to itself. Nothing ever touches the party leaderboard.
Beltr Practice Mode: a speed slider and A and B loop controls under the lyrics, practicing solo

Reveal Reel

The best take of the night, ready to share.

Beltr quietly records your performance while you sing. The moment you finish, scan the code on the TV and the clip is on your phone in crisp vertical video, ready to post or text to the group. Made right on your machine, shared only when you tap.

  • Captured as you sing

    Your performance films itself in shareable vertical video. No second phone, no setup, no scramble to hit record.

  • On your phone in one scan

    Finish the song and a code lights up the TV. Scan it and the take is in your hand, ready to send.

  • Yours, and only yours

    The clip is made and kept on your own machine. Nothing uploads anywhere. It travels only when you choose to send it.

On by default, off in a tap. Keep the whole song or just the last 20 or 60 seconds.

Everything included

One app. The whole karaoke night.

No add-ons, no upsells, no monthly anything. Every feature is in the box the day you download it.

Two demo songs to start

Open Beltr and the Beltr anthem is already loaded two ways — an AI-separated HD version and a classic CD+G karaoke disc — so you can sing before you import a thing.

On-device vocal removal

AI strips the vocals from any MP3 you own in about 30 seconds. Nothing uploads.

Word-by-word lyrics

Synced lyrics light up the TV in perfect time, with a countdown into every line.

Phone remotes

Everyone scans a QR and runs the night: queue songs, fade vocals, fire reactions — or sing right into the phone with the free iPhone & Android app.

Live pitch scoring

A pitch bar shows the note to hit, and your score climbs line by line.

Record & share clips

Beltr films your performance and hands you a vertical clip to post. Made on your machine, shared only when you tap.

Practice Mode

Slow it down, loop the hard part, and track your weak spots in private.

Change the key

Shift any song up or down six semitones to land it in your range.

MP3+G in & out

Import CDG karaoke discs and export to any hardware karaoke machine.

Works offline

Your music never leaves your computer. No account, no cloud, ever.

Spotlight themes

Cinematic looks that put the words under a stage light.

Video backgrounds

Play the real music video behind the lyrics, in sync.

Party games

Mini-games fill the breaks between songs and keep the room warm.

Buy once, own it

One-time purchase. No subscription, no expiry, no nagging.

No subscription

Pay once. Own it forever.

The most popular subscription karaoke app runs $9.99 a month, every month. Beltr is $19.99 once, then never again. Why isn't it a subscription — and why this cheap? Because Beltr runs entirely on your own computer: there's no cloud server for me to rent and no per-song bill to pass on to you, the two costs subscription karaoke apps charge every month to cover. One developer, sold once, yours to keep. It pays for itself in about six weeks, then it's free for life.

BeltrSubscriptionsFree lyric videos
Monthly cost$0 forever$7–10/moFree, with ads
Your own musicAny MP3 you ownTheir catalogHit or miss
Works with karaoke machinesYes — MP3+G in & outNoNo
Works offlineYesNoNo
Phone remotesAny phoneSomeNo
Live scoringYesSomeNo
Price$19.99 once$80–120/yrFree (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/karaoke
Join the discussion on r/karaoke →

Help shape the future of Beltr

Help shape what comes next.

New features, fixes, and half-baked ideas get hashed out in the Discord first. Drop in, tell us what’s missing, and help shape where Beltr goes next.

Join the Discord See what’s shipping ›

Get Beltr

Download free. Singing in two minutes.

Five songs free to start. Pay once when you're hooked. $19.99, forever.

macOSApple Silicon WindowsMicrosoft Store LinuxAppImage Ubuntu.deb package

Installers are 700 MB–1 GB depending on platform: the entire AI engine ships inside. Nothing uploads, nothing runs in the cloud.

Windows without the Store? Download the .exe installer · SmartScreen may ask once: “More info”, then “Run anyway”

$49.99$19.99 — one-time, forever

5 free songs included. No subscription, ever. Summer sale — $49.99 after.

Get Beltr — $19.99

Two ways you can't lose: try it free on 5 of your own songs — no card, no time limit. Buy it and change your mind? Full refund within 14 days — just email support@beltr.app. No forms, no questions.

Built by one person — CasaVargas LLC. No servers, no investors, no subscription — that's why it's a one-time price.

Now on every screen

Beltr is on every screen now.

The stage on your TV, the mic in every hand, the engine on your desktop. All native apps, all shipping now.

On your TV

Built for the big screen.

Synced lyrics, the pitch highway, live scoring, album art and CD+G — rendered crisp on the biggest screen in the house.

Android TV & Google TV Live Apple TV · App Store Live

In every hand

Every phone is a mic.

A wireless microphone and a full remote in everyone’s pocket. Sing into it, queue from it, watch your score climb on the TV.

iPhone · App Store Free Android · Google Play Free

On your computer

The engine of the night.

Your Mac, PC or Linux machine does the heavy lifting — vocal separation, lyrics, the whole library. Buy once, runs offline.

Mac · Windows · Linux Free to start

FAQ

Quick answers.

What is Beltr?

Beltr is a one-time $19.99 karaoke app for Mac, Windows, and Linux that turns any song you own into a karaoke track — vocals removed on-device with AI, synced lyrics on your TV, and phones as wireless remotes.

How does Beltr make a karaoke track?

Add any MP3, FLAC, or WAV from your library and Beltr's on-device AI separates the vocals from the instrumental in about 30 seconds, then syncs the lyrics to the music.

Is Beltr a subscription?

No. Beltr is a one-time purchase of $19.99 with a free 5-song trial. No subscription, no accounts, and lifetime updates are included.

Do I need any special equipment?

Just a computer and a TV or projector for the lyrics (HDMI or casting). Guests' phones become the microphones and remotes by scanning a QR code — no extra hardware required.