| Free allowance | 10 minutes of audio on the free Starter plan, processed through the Relaxed Queue; up to 200 MB per file. | 5 uploads per month, each up to 5 minutes long. | Free with no published quota — the site states no limit either way (unverified). | 3 separations per day, every day. Each run returns both tracks, with no trial clock. |
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| Account required | Yes — you have to register before you can download. | Yes — most features require an account. | The interface has no sign-up wall, though the site makes no official statement about it. | No. No account, no email, no software to install. |
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| What happens to your file | Uploads are stored on the service's servers under its privacy policy; we found no process-and-delete commitment. | Free accounts keep uploads for up to 2 months after the last login — no immediate-deletion guarantee. | No public retention statement: the privacy policy covers logs and cookies only (unverified). | Deleted from storage immediately after processing. Nothing stored, shared, or used for training. |
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| What you get back | The full result is a paid feature — the free tier returns a preview only. | MP3 and M4A export; WAV export is Premium-only on the web app. Watermark status unverified. | Full karaoke and a cappella downloads. Output format and bitrate unverified. | Both tracks as full-length MP3, no watermark from us, with bass and drums intact. |
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