Your sound. Your release.

What mastering can improve

The app adjusts tonal balance, loudness and peaks, with an album workflow that considers songs together. PRO applies stronger correction; Golden Master takes a gentler approach. Results depend on the recording and your settings.

It does not generate music, separate stems, replace instruments or reconstruct every detail lost in a damaged or heavily compressed source. For detailed creative changes, return to your mix or work with an audio engineer.

Quality checks and listening

The app checks the actual output, including loudness, true peak and peak behaviour after AAC conversion. A pass describes those technical checks. A warning identifies something to review. Neither is a guarantee of a particular sound or acceptance by a streaming service.

After exporting, compare Before and After and listen to the finished WAV. Check the delivery requirements of your chosen distributor before releasing your music.

AI-generated music and permissions

You need the rights required to process and release your audio, including relevant rights to samples, voices and other material. The terms of the AI service and the subscription you used may affect commercial use. Mastering does not change those permissions.

We do not claim ownership of your music. Processing a file does not certify its authorship, copyright status or eligibility for distribution.

Certificates and metadata

Version 1.1 does not issue ACC certificates, assign ISRC codes or write ACC metadata. Those services are not part of the mastering features offered on this website.

Independent software

AI Song Mastering UA is an independent product. References to Suno, Udio, Apple or other services describe compatibility or distribution; they do not imply endorsement or affiliation. Third-party names belong to their respective owners.

For help with a file or quality warning, visit Support. For licence information, read the applicable Apple EULA.