Privacy
Last updated November 13, 2026
Belt is a karaoke app at letsbelt.com. This page explains what we collect when you use it, why we collect it, and what you can do about it.
The short version
- You can sing without an account. Your singing is scored on your device while you sing. We don’t keep or send your voice anywhere unless you choose to save a take.
- We don’t sell your information and we don’t show ads.
- Belt is for people 13 and older. If you’re under 18, ask a parent or guardian before using it.
- You can delete your saved takes at any time, and ask us to delete your account.
What we collect and why
When you sing
Belt uses your microphone while a song plays, to show your pitch and work out your score. That happens on your device. Unless you save a take, the recording stays on your device and is gone when you leave the page.
Your settings
Settings such as your lyric style, and your best scores, are saved in your browser on your device.
If you sign in
Signing in uses your Google account. Google shares your name, email address and profile picture with us, and we use them to run your account. We never see your Google password.
Takes you save
When you’re signed in and save a take, we store the recording with your account, along with the song, your score and the key you sang in, so you can play it back later. You can delete any saved take from your list of takes.
Songs you add
When you add your own song, Belt uploads the file for a short time so our service providers can separate the music from the singer, time the words, and check that the file is a full, usable song. The uploaded copy is deleted from our storage once setup is done, and the finished song is kept on your device. To find the lyrics and song details, we send the song’s title and artist to public music databases.
Technical information
Like any website, the services that deliver Belt to you, such as our web host and font provider, receive your IP address and basic browser details when the page loads. We don’t use advertising or analytics trackers.
Your camera
Belt doesn’t use your camera today. If we add video features, using the camera will be your choice, and we’ll update this page before those features launch.
Who we share it with
We share information only with the service providers that help run Belt, and only what each one needs:
- Supabase: accounts, our database and file storage
- Google: sign-in, and Gemini AI to check songs you add
- Replicate: AI that separates songs and times the words
- GitHub: hosting the website
- Google Fonts and jsDelivr: fonts and code the website loads
- LRCLIB and MusicBrainz: lyrics and song details (song title and artist only)
We may also share information when the law requires it. We never sell it.
Children and teens
Belt isn’t meant for children under 13, and we don’t knowingly collect personal information from them. If you’re between 13 and 17, you need a parent or guardian’s permission to use Belt. If you think a child under 13 has given us their information, email us and we’ll delete it.
How long we keep it
- Account details and saved takes: until you delete them or ask us to delete your account.
- Songs you add: our uploaded copy is deleted once setup is done.
- Information on your device: until you clear your browser’s storage for letsbelt.com.
Your choices and rights
- Delete saved takes in the app at any time.
- Email us to see, correct or delete the information we hold about you. We’ll reply within 30 days.
- Depending on where you live, such as the EU, the UK or California, you may have more rights, like getting a copy of your data or objecting to how it’s used. Email us to use them.
Security
Belt is only served over an encrypted connection (HTTPS), and sign-in is handled by Google. Access to stored information is limited to your account and to the service providers that need it. No online service can promise perfect security. If we learn of a breach that affects your information, we’ll tell you as the law requires.
Changes to this page
If we change how we handle your information, we’ll update this page and the date at the top. For significant changes, we’ll also let you know in the app.
Contact
Questions or requests: hello@letsbelt.com