Each tool answers one question about your file and tells you what to do about it. No sign-up, files are deleted right after analysis.
Loudness, peaks, dynamics — and plain advice on what to fix before release. A verdict in seconds.
WAV, MP3 320 and FLAC with proper dithering and true-peak control — plus the file's LUFS in the response. Up to 5 files a day.
How much Spotify, YouTube and TikTok will turn your track down after normalization — with an 'as on the platform' preview.
Guess the boosted frequency — a daily challenge with streaks and shareable results.
Your track's key, Camelot code and tempo — with mix-compatible keys.
Your track's LUFS, True Peak and LRA — a free loudness check.
Target LUFS and settings by genre and platform.
A snippet of your track in 4 mastering styles in 20 seconds — compare character before the full run.
These are free utilities covering the checks that come up before and after mastering. They need no signup and store nothing: audio is analysed and deleted immediately, and the ear trainer runs entirely in your browser.
Each tool answers one specific question that would otherwise mean opening heavy software or guessing by ear.
Loudness penalty — when the master is ready and you need to know whether platforms will turn it down. LUFS analyser — when you need exact loudness, true peak and range figures per ITU-R BS.1770.
Key and BPM — when preparing to mix, picking samples or recording a part. Mastering calculator — when you are unsure what target to set for a given genre and platform. Ear trainer — for daily practice: it builds a skill rather than processing a file.
The tools measure and advise but do not change your sound. They help you decide: remix the track, lower the loudness target, or ship it as is.
Once decided, the mastering itself happens in the main app — where you can also compare four processing styles on your own track and pick one.
Target-LUFS guarantee, true peak ≤ −1 dBTP, honest A/B and a track passport.
Master for free →