Mix Comparison App — Desktop Software

Why Doesn't My Mix
Sound Like That?

Load the record you're chasing next to your own mix and find out, in plain language, what's actually different between them. No grade. No advice. Just the gap.

Available on Mac Windows
$29.99

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HMD Reference — Mix Comparison
HMD Reference comparing a mix against a reference track
Loudness matched to BS.1770 Measures · Compares · Explains
How It Works

Load Two Files. Read the Difference.

01
Drop In Your Mix
Drag your bounce onto the window — rough bounce or finished master. The first file you drop becomes your mix.
02
Add the Record You're Chasing
Everything after your mix becomes a reference. Load as many as you like and click between them.
03
Match the Loudness
Flip on Loudness Match and the louder file is turned down to meet the other — so "louder" stops sounding like "better".
04
Read the Gap
No Analyze button. The biggest difference is already written out in plain English — then the ones behind it.
See It In Action

Watch It Find the Gap

HMD Reference — Load & MeasureHMD Reference — The Difference WheelHMD Reference — Biggest Difference, In WordsHMD Reference — Your Reference BankHMD Reference — A/B Without the Flinch
Crash_MIX_10.mp3 · vs · JV x FritZ x DEv
1 / 5
The Difference Wheel

Seven Things It Measures. One Word Each.

Under every label on the wheel is a single word saying which way your mix is leaning. Read it as a sentence: your mix is narrower.

Bass
HeavierORLighter
The weight underneath everything, below the body of the track.
Warmth
WarmerORThinner
The low-mid body where toms, low strings and the weight of a vocal live.
Density
DenserORMore Open
How much room sits between the loud moments and the quiet ones.
Punch
PunchierORSofter
How hard the transients hit at the same loudness.
Width
WiderORNarrower
How far the stereo image opens out either side of the centre.
Air
AirierORDuller
The top octave — the sheen above the cymbals.
Clarity
CrisperORSmoother
The upper mids that carry consonants and the crack of a snare.
Example
"Your mix has slightly more low-mid weight than the reference."
Features

Everything You Need to Close the Gap

Plain-Language Findings
A similarity figure, the biggest difference, everything else ranked behind it — and what's already close, so you know where to stop.
Loudness Match
Measured to BS.1770. Attenuate-only — it turns the louder file down and never turns anything up, and shows you the exact offset.
Your Reference Bank
Scan a folder of the records you actually reach for. Each is measured once, then ranked against every new bounce.
Instant A/B
One playhead across both files and a 12 ms equal-power crossfade. The waveform swaps with the sound, so you always see what you hear.
Export as PDF
Save the wheel, the findings and the measurements as a document you can send to the artist, the client or whoever asked.
Nothing Leaves Your Computer
Real DSP on your machine. No song is uploaded, no AI guesses at your audio — the sentences only restate what the numbers said.
It measures.
You decide.

HMD Reference will never tell you your mix is wrong, and it will never tell you what to reach for. Two records can differ enormously and both be finished — a ballad against a programmed-drums record isn't a mistake, it's two different songs.

So it describes the difference, honestly, and stops there. You already know how to fix a mix. This tells you where to look.

Measurement"Your mix has more low-mid weight than the reference." — always true. Never "too much low end."
Overview

About HMD Reference

Technical

System Requirements

System Requirements
macOS
OS VersionmacOS 11 or later
ArchitectureApple Silicon & Intel
App TypeStandalone — no DAW required
InternetActivation only (offline option)
Windows
OS VersionWindows 10 or later
Architecture64-bit only
App TypeStandalone — no DAW required
InternetActivation only (offline option)
LoadsWAVAIFFFLACMP3M4AAACALACOGGOPUSCAFMP4
Licensing

Licensing & Delivery

Licensing & Delivery
Instant Download
Your download access is delivered to your email immediately after purchase.
Sign In to Activate
No key to type or keep track of. First launch opens your browser — sign in to your Help Me Devvon account and the app unlocks itself.
Offline Studio Machines
No internet in the studio? Activate with a machine file from any online computer. Once activated, it runs fully offline.