The Songmastr Alternative That Never Uploads Your Music
Songmastr masters your track against a reference by sending both files to its server. MixMasterAI does the same class of reference matching — full frequency curve, stereo width, and loudness — entirely in your browser. Your music never leaves your device.
The problem with Songmastr:
Songmastr requires uploading both your song and your reference to its server, states files are kept up to 24 hours, and caps free use with a weekly limit — and there's a queue when the server is busy.
Feature Comparison
3 Reasons to Switch from Songmastr
Your music never leaves your device.
Songmastr's workflow is upload-and-wait: your unreleased song and your reference both travel to its server, where files sit for up to 24 hours before deletion. MixMasterAI runs the reference-matching engine in your browser with Web Audio — there is no upload, no retention window, and nothing for anyone to leak, because we never receive your audio at all.
The same reference-matching idea, without the queue or weekly cap.
Songmastr is built on the open-source Matchering library: match the reference's frequency response, loudness, and stereo width. MixMasterAI implements the same technique — an STFT-derived match EQ, width matching, and LUFS matching — natively in the browser, so there is no server queue when traffic spikes and no weekly limit on how many tracks you can master.
More than reference mastering.
Songmastr does one thing: master against a reference. MixMasterAI also masters without a reference — 16 genre presets, Warm/Balanced/Open styles, and exact LUFS targets for 7 streaming platforms — plus stem mixing, a de-harsh stage tuned for Suno and Udio artifacts, and a loudness-matched A/B so you can honestly hear the improvement.
Frequently Asked Questions
Is MixMasterAI really free like Songmastr?
Yes — and without Songmastr's weekly cap on free masters. No account, no watermark, no limit. Upload nothing, master as many tracks as you want, download clean WAVs.
Does MixMasterAI use Matchering like Songmastr does?
Songmastr runs the open-source Matchering library on its server. MixMasterAI implements the same core technique — matching the reference's frequency spectrum, stereo width, and loudness — reimplemented for the browser so your files never need to be uploaded at all.
Why does it matter that MixMasterAI runs in the browser?
Three reasons: privacy (your unreleased music never touches a server), speed (no upload time and no processing queue), and reliability (no weekly limits or server downtime). The processing happens on your own device using Web Audio.
Can I master without a reference track?
Yes. Unlike Songmastr, which requires the reference workflow, MixMasterAI also offers genre-based mastering with 16 presets, three mastering styles, an intensity control, and exact LUFS targets for Spotify, Apple Music, YouTube, TikTok, and more.
How do I switch from Songmastr to MixMasterAI?
Open mixmasterai.co/reference-master, choose your song, add the reference track you want it to sound like, and hit Master My Song. Both files stay on your device and the result downloads in about a minute.
Free Forever
Try MixMasterAI free.
No Songmastr subscription needed.
Match a Reference FreeNo account. No watermark. No cost.