Your music folder, your machine, $19.99 once. Songs you already own become karaoke on your TV.
$19.99
5 songs free · no card · works offline · Mac, Windows, Linux
14-day refund · built by one developer
Real screen recording of the app. No generated footage.
The magic
This is exactly what Beltr does to any song you own — on your own machine, in a minute or two, with nothing uploaded.
“Beltr” — original theme song
5 songs free · no card · Mac, Windows & Linux · big installer — the whole engine ships inside, nothing uploads
Almost no work
No converting. No hunting down karaoke files. No typing out lyrics. Point Beltr at the music you already own and it handles the rest by itself — here's the actual app doing it.
01 · Setup
Setup asks one real question: where's your music? Beltr checks the usual places — your Music folder, an Apple Music library, a folder of karaoke discs — and shows you what it found. One tap connects it.
Nothing gets copied, converted, or moved. Your files stay exactly where they are.
02 · Your library
Every song in that folder is now sitting in Beltr, searchable by artist, album and genre. There's no separate karaoke catalog to buy from and nothing to prepare in advance.
When someone asks for a song, you find it and hit one button. That's the whole interaction.
03 · The work
Beltr strips the vocals, pulls the synced lyrics, maps the pitch and reads the key — on your own machine, one song at a time, entirely on its own. You get named stages instead of a spinner.
And it hands the song over early: the moment it's singable it says so, and finishes the polish in the background.
04 · Showtime
Press Play and Beltr opens the big screen, starts a room and puts a code and QR on the TV. Phones join by scanning it — no app to install, no pairing, no accounts.
And you don't wait for any of this the first time: Beltr arrives with a song already prepared, so you can sing before you've imported a thing.
No card · no signup · Mac, Windows & Linux
The whole collection
CDG and MP3+G discs, .kar and .mid files and Thai NCN songs play as-is — lyrics and timing read straight from the file, legacy encodings and CJK fonts included. Everything else you own goes through vocal separation on your own machine and comes out a karaoke track. And it exports back out as MP3+G, CDG or .kar for the karaoke machine already in the basement.
No subscription
Subscription karaoke rents you a catalog: $80–120 a year, and you can only sing what they licensed this month. Beltr has no catalog to rent — your music folder is the catalog, it runs entirely on your own computer, and nobody can remove your songs. That's also why it can cost $19.99 once: no cloud servers to rent, no per-song licensing bill to pass on. One developer, sold once, yours to keep.
| Beltr | Subscriptions | Free lyric videos | |
|---|---|---|---|
| Monthly cost | $0 forever | $7–10/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 |
| Updates | Frequent, free forever | While you pay | — |
| Phone remotes | Any phone | Some | No |
| Live scoring | Yes | Some | No |
| Price | $19.99 once | $80–120/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
Why I built Beltr
Hi — I'm the one person behind Beltr, and I'm genuinely bad at karaoke. I do it constantly anyway. Somewhere along the way everything became a subscription — even singing in your own living room. So I built Beltr alone, at night (CasaVargas LLC): karaoke the whole family can pile into, on the TV you already own, with the songs you already have. It runs entirely on your own computer, so there are no servers for me to rent and no reason to bill you every month. Yes, the vocal removal is AI — it runs on your computer, not mine, and your files never leave your machine. And if something breaks, you're not emailing a faceless company — you're emailing me, at support@beltr.app.
— Jon
New features get hashed out in the Discord first. Come tell me what's missing.
Get Beltr
Five songs free to start. Pay once when you're hooked. $19.99, forever.
Actively developed · see what’s new →
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 — here’s what to expect
Store-reviewed on every platform: the desktop app is on the Microsoft Store, and the free remote and TV apps are on the App Store and Google Play.
$19.99 — one-time, forever
5 free songs included. No subscription, ever. A year of subscription karaoke runs $80–120. Beltr is $19.99 once.
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.
Secure checkout via Lemon Squeezy — instant license key by email. One key covers 2 devices.
Built by one person — CasaVargas LLC. No servers, no investors, no subscription — that's why it's a one-time price.
Free companions
Phones join with a QR scan — nothing to install. If you want more, the TV apps and the phone remote-and-mic app are free.
FAQ
Any MP3, FLAC, or WAV you already own. Beltr also reads karaoke files you already have — CDG and MP3+G discs, .kar and .mid files, and Thai NCN songs — taking their lyrics and timing straight from the file. Nothing streams, and nothing is uploaded.
Add any MP3, FLAC, or WAV from your library and Beltr starts on it automatically: its on-device AI separates the vocals from the instrumental — a minute or two for a typical song, quicker on a recent Apple Silicon Mac and longer on an older CPU-only PC — then syncs the lyrics to the music. Beltr also opens with a song already prepared, so you can sing before you import anything.
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.
On Windows you can install from the Microsoft Store, which skips the SmartScreen warning entirely — the direct download is the same app. Either way there's a 14-day refund, no questions asked.
A tool we like
StemDeck pulls a song into up to six parts — vocals, drums, bass, guitar, piano — free, open source, and on your own machine. It is the one to reach for when you want the pieces of a song rather than a karaoke night.
Beltr is on StemDeck's We Recommend list, and they take no money from anyone on it. It costs nothing to use, so a star on the repository is the only thanks it can take.