It does the boring hour
High-passes, level trims, the obvious ring in the snare. The work that is the same on every song and that nobody enjoys.
It hands the song back
What you get is a starting point, not a verdict. Every move has its reason next to it, so you can keep it, change it, or throw it out.
Nothing happens without you
Tick what you want and ignore the rest. Your project is backed up before anything is written, and your music never leaves your Mac.
Two minutes instead of two hours.
Press Mix my track for me and 14 tracks of groundwork comes back as one list — one line each, with the reason next to it. Untick anything you disagree with, apply the rest, and you are past the part of the mix nobody misses.
Taste calls — reverb, extra punch — come marked optional and start off. No measurement can tell you your song wants reverb. That part stays with you.
Suggested changes
14 tracks listened to, 9 suggestions, 2 minutes
Backs up your project first
A real example. Every number comes from your song, not a preset — so it is somewhere sensible to start, not somewhere generic.
Then push it around in plain words.
A starting point is only useful if you can move it. Say what bothers you — no need to know which knob, or which of your 14 tracks it lives on — and try the next version straight away.
- “The bass is too boomy.”
- Finds where the boom actually sits and takes it out — and tells you how much it took.
- “Get the vocal in front of the guitars.”
- Turns the guitars down only where they are covering the vocal, not everywhere.
- “Make the drums punchier.”
- Vague is fine. The whole kit is treated as one, so it never falls apart.
- “A bit less than that.”
- It remembers what it just did. So does “same for the guitars”.
It works out your tracks
Kick, snare, bass, lead vocal — worked out from your own track names, in any language, abbreviated however you actually type them. You check the list once, and it remembers, even if you rename or reorder things later.
Six buttons, or just type
Mix my track for me. Diagnose this mix. Tighten the drum timing. Fix the vocal balance. Master my mix. Or all of it at once. There is a text box for everything else.
It saves you the evening you would have lost.
The worst hours in a mix go to a problem that was never in the mix — it was in the recording. Press Diagnose this mix and you find out in seconds, instead of at midnight.
- Distortion in the recording
- Already in the file, before you opened the project.
- Hiss and hum
- Loud enough that it would survive to the finished master.
- Two mics fighting
- Where they cancel each other out, and which one to move.
- Stems that came from an MP3
- Whatever the file is called.
- Wrong sample rates
- Files REAPER quietly works around without telling you.
And get something you can listen to in the car.
Say where the song is going and you have a loud, finished-sounding version to live with overnight — the fastest way to hear what your mix still needs. No reference track needed, though hand one over and it will match that instead.
| You say | You get |
|---|---|
| “Master it for Spotify” | Ready to upload, at the loudness Spotify wants |
| “And for Apple Music” | Same song, Apple’s spec |
| “Make it club loud” | As loud as it goes without falling apart |
| “Cut this to vinyl” | Bass centred, top end eased off, ready for the cutter |
Ask for all four and you get all four in one pass, not four evenings.
Your music never leaves your Mac.
Not a promise buried in a privacy policy — it is how the thing is built. Mixroadie is in two halves, and only one of them ever touches your audio. Nothing is uploaded, so nothing waits in a queue either: the two minutes are your Mac working, not a server.
The half that hears your song
Always on your computer.
- Opens your REAPER project
- Listens to every track
- Makes the changes you ticked
- Backs up before it touches anything
The half that thinks
Never gets the audio. Ever.
- Gets a page of numbers
- Sends back a list of suggestions
Works with no internet at all
Out of the box, the thinking half runs on your Mac too. Nothing to sign up for, nothing to pay, nothing to connect to.
Or use Claude or ChatGPT instead
A few cents a song, and still only numbers ever get sent. You have to switch it on yourself in Settings, where you can see exactly what would be sent — and switch it off again just as easily.
What it will not do.
Mixroadie is not trying to be a great mix engineer. It is trying to save you the two hours before one is needed. When it cannot do something, it says so — instead of doing something else and hoping you do not notice.
-
Finish the record for you
It gets you to a solid, defensible balance and stops there. The last stretch — the moves that make it sound like you and not like anyone else — is the part worth your evening.
-
Tune your vocals
It will tell you what is out of tune and point you at something that fixes it.
-
Change your arrangement
No parts moved, no takes picked for you. That part of the record is yours.
-
Make a mono track wide
There is nothing there to widen. It will show you what actually is narrow instead.
Double-click. Answer one question.
The installer checks your Mac first and only offers what will actually work on it. Then it is a panel in REAPER, next to the project you were already working on.
You cannot break it. Lost connection, full disk, a download that stopped halfway — you still end up with a working install. Run it again whenever you like.
- Mac
- Apple Silicon. Intel works for everything but the local model.
- REAPER
- 6.83 or newer.
- Space
- About 25 GB, nearly all of it the model.
- Plugins
- None to buy. It uses the ones REAPER already has.
Open the song you got stuck on.
Free. No account, no upload, no subscription. Press Diagnose this mix and see what it finds before you let it change anything — worst case, you have spent two minutes and learned something about your recording.
Version placeholder. About 25 GB after the first run.