The professional audio comparison tool for engineers and their clients. Upload, compare, get feedback — all in one seamless workflow.
Built by engineers, for engineers. Every feature exists because someone in a real session needed it.
Gapless switching between Demo, Mix, Master and Reference tracks with keyboard shortcuts. Switch mid-bar without losing the groove. LUFS-matched loudness ensures you compare quality, not volume.
Generate secure links for clients. They listen, leave feedback, and approve — all without creating an account.
Timestamped notes, PDF exports, and full approval history. Every revision decision documented.
Stereo, Mono, Side, Phone simulation. Hear your mix the way your audience will on every device.
Remove bias from the comparison. Track labels are hidden so you and your clients judge purely on sound. The truth comes out when you can't see which version is which.
From upload to client approval in under a minute.
Drop in your Demo, Mix, Master, or Reference tracks. WAV, FLAC, MP3 — all formats supported with zero quality loss. LUFS analysis runs automatically.
Generate a secure link with optional PIN protection and expiry. Your client opens the Listener Mode — no account needed, no downloads, just audio.
Clients A/B compare, leave timestamped feedback, and hit Approve when they're happy. You see everything in your dashboard. Done.
Dark by default. Keyboard-first. Designed to stay out of your way and let the music speak.
Free during beta. No credit card required. Your ears will thank you.