AI Mastering

Overview

AI Mastering is an online music mastering service with tools for adjusting and inspecting how a track is processed. It will suit musicians who want control over loudness and output settings, as well as developers integrating mastering into an audio workflow.

Its breadth is appealing: the service combines reference track matching, WAV export, analysis tools and an offline desktop option. The online workflow has an unshortenable wait, though, so people who need quicker processing or have demanding file requirements may prefer the desktop version.

Key features

The web interface accepts drag-and-drop audio and supports WAV, MP3 and MP4 input. Users can customize target loudness, mastering level and output format, then inspect spectrum and loudness analysis. That combination gives users meaningful adjustment and feedback rather than a single automatic result; the limiter is intended to balance loudness and dynamic range.

Reference track matching and WAV export make the service relevant to music-production workflows. A bass preservation setting can reduce attenuation in low frequencies. The maker says frequencies up to 24 kHz are possible when the source sample rate is at least 48 kHz and the same rate is chosen in custom settings, which makes the result dependent on both the source and the user's configuration.

The API supports audio upload and download, mastering, and changes to target loudness and mastering level. Its documentation links JavaScript (Node) and Ruby client libraries and tutorials. That offers a route for developers, but the maker says its focus is shifting toward the offline desktop version rather than the API.

The offline desktop version avoids the online service's file limitations: its maximum file size depends on the computer's memory. Online wait time cannot be shortened, and the maker points users to the offline version when that wait is a concern. Users retain control over mastered tracks without service restrictions, according to the maker.

Pricing

The Free Plan costs 0.00 USD per free, billed $0 / Month, and includes Unlimited Mastering. It is an unusually open starting point for musicians who want to process tracks without a stated mastering quota. The plan details do not specify a cap on file size or online wait time, so the free price should not be taken to mean those workflow constraints disappear.

No paid plan is given. For users whose main concern is online processing time or file limits, the desktop option is the practical alternative described by the maker, rather than a higher-priced plan.

Platforms

AI Mastering lists Android, iOS, Linux, macOS, Windows and web support, alongside API, extension and self-hosted platform options. The service also offers an offline desktop version, giving users a choice beyond online processing.

Who it's for

AI Mastering is best suited to musicians seeking free, unlimited mastering with adjustable loudness and mastering level, or developers who need API access for audio upload, processing and download. It is less compelling for people who depend on fast online turnaround or have files that exceed online limits; the offline option may suit them, provided their computer has enough memory.

Pros and cons

• Pros: Unlimited mastering on a free plan makes repeated track work possible without a stated quota.
• Pros: Target loudness, mastering level, output format and analysis tools give users more control than a single automatic setting.
• Pros: An offline version avoids the online file limitations, with file size depending on computer memory.
• Cons: Online wait time cannot be shortened, making the web workflow a poor fit when quick turnaround matters.
• Cons: The maker's shift in focus away from the API may make the service less suitable for developers choosing primarily on its API direction.

Alternatives

AI Music Mastering Software is a broader category directory for readers comparing options.

Matchering is a free alternative with Linux, macOS, web, Windows and self-hosted platforms; choose it if those deployment options are a better fit.

SoundBoost.ai offers Android, iOS and web access. Its free plan allows 10 revisions per project but no finalizing or downloads, so choose it only if that limited preview workflow suits you.

TrackGleam offers unlimited free mastering with WAV and MP3, no watermark or sign-up, across Android, iOS and web. It is a fit for readers who want that stated free workflow.

Tunr is a free Mac and Windows option with a machine-counted free key and three masters before a licence key; consider it if a desktop-only tool suits you.

Barichord Audio Lab has a free web playground with unlimited uploads and previews, manual EQ and FX tools, and before-and-after comparison. It may suit users who want to preview manual adjustments before paying per credit for AI diagnosis and one-click processing.

HanoLab Mastering offers web and API access. Its free plan has 30 credits per month, up to five Studio tracks per month, one voice model slot, watermarked MP3 export, 500 MB storage and a seven-day period; consider it if those quotas fit your workflow.

MasterForge is another web-based alternative.

SongUp AI is another web-based alternative.

Verdict

Choose AI Mastering if you want unlimited mastering on a free plan, adjustable loudness controls and analysis, with the option to work offline when online file limits or waits get in the way. Look elsewhere if quick online processing is essential or if you want an API-first service: the online wait cannot be shortened, and the maker is shifting its focus toward the desktop version.