Songmastr
Songmastr is a web service that automatically masters an uploaded song against a reference track.
What Songmastr is
Songmastr is a web service that automatically masters an uploaded song against a reference track. Its artificial-intelligence processing, based on the open-source Matchering library, matches the reference song’s RMS, peak amplitude, and stereo width. Uploads can be WAV or MP3, and the finished master is downloaded from a result page. Songs may be up to 10 minutes and 80 MB, while uploaded files are deleted no later than 24 hours after upload. No installation or registration is required. A free plan provides 7 song masterings per week. One-time packs cost 4.00 USD, 10.00 USD, 20.00 USD, or 60.00 USD, with increasing master and song allowances; paid packs include uncompressed WAV files, custom and catalog references, and the Studio Pack adds mixing advice for 1 song. Songmastr supports reference matching and WAV export, but not stem mastering or loudness targets. The terms limit use to personal, noncommercial purposes and require users to be at least 18.
Good
- Free plan includes 7 masterings weekly
- Reference matching guides the mastering result
- Accepts WAV and MP3 uploads
- No installation or registration required
- Paid packs provide uncompressed WAV files
Watch out
- Songs limited to 10 minutes and 80 MB
- No stem mastering
- No loudness targets
- Terms restrict use to personal, noncommercial purposes
Who it suits
Songmastr suits musicians seeking browser-based automatic mastering guided by a reference track. It is intended for users able to work within the file limits and personal, noncommercial terms.
Verdict
Songmastr focuses on automatic, reference-guided mastering through a browser. Its free allowance and one-time packs support different workloads, while file limits and usage terms define the boundaries.
Plans and prices
From Songmastr's own pricing page, checked 8 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | 7 song masterings per week |
| Single Pack | $4, paid once | 3 masters · 1 song · 3 different masters per song · custom and catalog references · uncompressed WAV files |
| EP Pack | $10, paid once | 9 masters · 3 songs · 3 different masters per song · custom and catalog references · uncompressed WAV files |
| Album Pack | $20, paid once | 50 masters · 10 songs · 5 different masters per song · custom and catalog references · uncompressed WAV files |
| Studio Pack | $60, paid once | 300 masters · 30 songs · 10 different masters per song · custom and catalog references · uncompressed WAV files · mixing advice for 1 song |
The facts
Each one read from Songmastr's own pages, with the date it was checked.
What it does
- Age eligibility
- The terms require users to be at least 18, or the age of majority in their jurisdiction if higher.checked 8 Oct 2026
- Audio matching
- The algorithm matches the reference song's RMS, FR, peak amplitude, and stereo width.checked 8 Oct 2026
- Automated access
- The terms say automated use, including bots and scripts, is not authorized unless the website owner explicitly permits it.checked 8 Oct 2026
- Commercial use
- The terms grant use for personal and noncommercial purposes.checked 8 Oct 2026
- File limits
- A song can be at most 10 minutes long and 80 MB.checked 8 Oct 2026
- File retention
- The upload page says files are deleted at most 24 hours after upload.checked 8 Oct 2026
- Input formats
- Users can upload songs and reference tracks in WAV or MP3 format.checked 8 Oct 2026
- Output
- After processing, users can download the mastered file from a download page.checked 8 Oct 2026
- Purpose
- Songmastr automatically masters a song to a reference track uploaded by the user.checked 8 Oct 2026
- Reference choice
- The maker recommends choosing a reference track in the same genre and vibe as the song being mastered.checked 8 Oct 2026
- Requirements
- The service requires no software installation or registration.checked 8 Oct 2026
- Submission rights
- The terms say users retain copyright to their submissions while granting the service a perpetual, royalty-free, sublicensable license to use them.checked 8 Oct 2026
- Technology
- The service uses artificial intelligence and is based on the open-source Matchering library.checked 8 Oct 2026
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