Rune: AI Song Mix Feedback

mrbooz AB

In-app purchases

About this app

Rune is an old Swedish mix and master engineer. You send him a track. He listens, and he tells you the truth about it — before you release it.

No hype. No "this will chart." No fake encouragement. Just a straight read from someone who has heard ten thousand mixes and will tell you what is actually wrong.

HOW IT WORKS
Upload a song, beat, demo, vocal take, or podcast episode from your files. Rune listens and sends back a written read:

- A verdict: not yet, almost, or ship it.
- The ONE fix that matters most right now — plus an ordered plan for what to fix after that.
- Timestamped notes on specific sections, so you know exactly where to go.
- Real measured numbers from your audio: LUFS (loudness), true peak, LRA (dynamic range), key, BPM, and how much air is up top.

This is a pre-release check. It is the honest second opinion you take before you put a track out into the world.

WHO IT IS FOR
Bedroom producers. Rappers and singers recording at home. Beatmakers. Podcasters. Anyone making audio alone who does not have an engineer in the room to say "not yet" when it is not ready. If you have ever asked "is my mix good enough to release?" — Rune answers that.

PROVE A HUMAN MADE IT
When you ship a track, Rune mints a free receipt: a real SHA-256 fingerprint of your audio, made by a human, on a real device. Keep it.

And if an AI-detector ever wrongly flags your track as machine-made, Rune can build you a formal appeal packet — a PDF you hand to a distributor or platform as evidence that you made it. Real files. Real fingerprints. Your name on it.

WHAT YOU GET FREE
- One honest read, free, every day. It refills daily.
- Your first full fix plan, free.
- Your free human-made receipt every time you ship.

RUNE PRO
- Unlimited reads — send as many tracks and takes as you want.
- Every fix plan, in full.
- Every appeal packet.
Monthly or yearly. Cancel anytime.

You can also buy a single appeal packet on its own, without Pro, if you just need the one.

PRIVATE BY DESIGN
No account. No login. No sign-up. Your tracks, receipts, and settings live on your device. Your audio is sent securely only to be measured and read, and it is not kept on the server afterwards. "Delete my data" wipes everything, locally, whenever you want.

SPEAKS YOUR LANGUAGE
Rune reads your track and writes back in your language — available in 18 languages.

WHAT RUNE WILL NOT DO
He will not promise you a hit. He will not tell you it is great so you feel good. He will not sign you. He gives you an honest read on the mix, the master, and whether it is ready — and then it is up to you.

Send Rune your track. Find out what an honest engineer actually hears.

What’s new

Adds an in-app disclosure and consent step shown before any audio file is selected or sent, so you choose whether your track is sent for the read. Consent can be withdrawn at any time in Settings.