SoundBoost.ai

SoundBoost.ai is an online audio mastering service for musicians, artists, and producers. It combines deep learning with LLM technology, and users can describe desired sound changes in natural language for AI mastering. Unlimited and Unlimited Plus include reference mastering. The service also splits tracks into vocals, drums, bass, and instruments; Unlimited Plus adds guitar and piano channels. Finished masters can be downloaded as 24-bit WAV or 320 kbps MP3, and users can import tracks from SoundCloud links. Free users can submit stem-splitting uploads without a daily or monthly count quota, but each file is limited to 1.5 GB and 22 minutes 30 seconds. The free plan includes 10 revisions per project, but does not allow finalizing or downloads. Unlimited is listed at $48.00 per year, billed annually; the pricing note lists paid plans from $4/mo (annual). One subscription works across the web, iPhone, iPad, and Android. SoundBoost says users retain ownership of their music and may monetize their masters, and that it does not train its AI on users' audio without consent.

SoundBoost.ai pairs prompt-led mastering with stem splitting and reference mastering on its higher plans. The free plan allows revisions and stem uploads but not finalized downloads.

SoundBoost.ai suits musicians, artists, and producers looking for online mastering and stem separation. Users who need reference mastering must choose Unlimited or Unlimited Plus.

Overview

SoundBoost.ai is an online mastering and stem-splitting service for musicians, artists, and producers. It is best suited to people who want to steer mastering with written prompts and work across web and mobile. Its free tier allows project revisions but stops short of finished, downloadable masters.

Key features

SoundBoost uses deep learning and LLM technology as a virtual mastering engineer, letting users describe the sound changes they want in natural language. That offers a more direct way to communicate creative intent than choosing from fixed controls, but the service does not provide loudness targets for users who need to specify one.

Reference mastering is reserved for Unlimited and Unlimited Plus, making a paid plan necessary when matching a reference track is central to the workflow. Stem splitting separates vocals, drums, bass, and instruments; Unlimited Plus adds guitar and piano stems. The extra channels make Plus the more complete option for producers who need finer separation, while the base paid plan covers the core stem set.

Finalized masters are available as 24-bit WAV or 320 kbps MP3. SoundCloud importing lets users bring in tracks by link, and accepted audio formats include WAV, MP3, FLAC, AIFF, AAC, ALAC, M4A, OGG, and OPUS. Video inputs include MP4, MOV, M4V, WEBM, MKV, AVI, and 3GP.

Free stem uploads have no daily or monthly count quota, but each file is limited to 1.5 GB and 22 minutes 30 seconds. Free projects allow 10 revisions, yet cannot be finalized or downloaded, so the tier is useful for exploring revisions and stem uploads rather than delivering a finished master. SoundBoost says it does not train its AI on users' audio or share music with third parties without consent. Users retain ownership and may monetize their masters; cloud storage lasts while a subscription remains active.

Pricing

Free costs nothing and includes 10 revisions per project, but no finalizing or downloads. It suits evaluation and revision work, not anyone who needs exportable results.

Unlimited costs $48 a year, billed $48.00 per year (= $4.00/month, billed annually). It includes unlimited mastering and stem splits, 15 revisions per track, reference mastering, and support for up to 32 bit, 48000 Hz. This is the straightforward choice for regular individual use where the core stem set is sufficient; the annual billing commitment matters for users who only need occasional mastering.

Unlimited Plus has custom pricing and adds bulk mastering, unlimited revisions, full-length previews, drum separation, piano and guitar stems, and a priority queue. It is aimed at heavier workflows that benefit from batch work or more stem options, though the lack of a published price makes cost comparison harder.

One subscription works across the web, iPhone, iPad, and Android. Support is available by email at [email protected].

Platforms

SoundBoost supports web, iOS, and Android. Cross-platform access under one subscription is useful for users who move between desktop browser work and mobile devices.

Who it's for

SoundBoost is a good fit for musicians, artists, and producers who want prompted mastering alongside stem splitting, especially those who value reference matching or need to move between web and mobile. It is less suitable for users who require explicit loudness targets, or who need downloads from a free plan.

Pros and cons

• Pros: Natural-language mastering prompts offer a way to steer the sound directly; paid reference mastering supports work toward a chosen track.
• Pros: Stem splitting covers vocals, drums, bass, and instruments, with guitar and piano added on Plus.
• Pros: Unlimited allows unlimited mastering and stem splits, while the free tier imposes no daily or monthly stem-upload count quota.
• Cons: Free projects cannot be finalized or downloaded, limiting the tier to revision and exploration.
• Cons: Free stem uploads still have per-file size and duration caps, and Free is limited to 10 revisions per project.
• Cons: No loudness targets are available, and Unlimited Plus has custom pricing rather than a fixed published cost.

Alternatives

AI Mastering is worth considering for users seeking a free plan with unlimited mastering and broad platform coverage, including desktop operating systems, API, and self-hosted options.

TrackGleam may suit users who want unlimited free mastering with WAV and MP3 output and no watermark or sign-up requirement.

MasteringBOX is another freemium option with web and Android support.

Auralith Forge may fit users who prefer one-time master purchases: its free tier includes three full-length masters and unlimited 30-second previews, with a single extra master priced at €2.99.

Free Music Creator AI Mastering may be a better match for users who also want music generation, though its free plan limits use to two songs and one generation per month and is for personal use only.

SongUp AI is a web-based freemium alternative centered on instant songs and credits, rather than the mastering-and-stem workflow SoundBoost provides.

Barichord Audio Lab may appeal to users who want manual EQ and FX tools with unlimited uploads and previews on its free Playground tier.

HanoLab Mastering is another freemium web option, with API access and a free allowance measured in monthly credits and Studio tracks.

AI Music Mastering Software is a category list for comparing more services.

Verdict

Choose SoundBoost.ai if you want prompt-led mastering and stem splitting in one service, with reference matching and mobile access on paid plans. The $48.00 annual Unlimited plan makes sense for recurring work that needs exports and the core stem set; look elsewhere if you need loudness targets, a free export path, or transparent Plus pricing.