About TrackGleam
TrackGleam (formerly Auracle) is a free audio mastering tool that runs entirely in your web browser. Drop in a mix, and it analyzes your track and applies a professional mastering chain — EQ, compression, saturation, stereo shaping, and true-peak limiting — right on your device. No account, no upload limits, and nothing leaves your computer.
Private by design
Most online mastering services upload your music to their servers. TrackGleam doesn't. All audio processing — free masters and paid AI masters alike — happens locally in your browser using the Web Audio API. For AI masters we send only numeric measurements (loudness, tonal balance, stereo profile) to tune the processing; your actual audio never leaves your device.
The Gleam Engine V2
Under the hood is a 14-stage mastering chain: intelligent analysis, an 8-band parametric EQ, dynamic EQ, multiband and parallel "glue" compression, upward density, multiband harmonic saturation, mid/side and stereo processing, de-harshing, a lookahead true-peak limiter, and dithered export — with genre-aware presets and an optional linear-phase reference match. It's tuned to sound like a real mastering engineer finished your track, not like a preset was slapped on it.
Why it's free — and how we keep it that way
We think every artist should be able to make their music sound finished, whether or not they can afford a studio or a subscription. So the full mastering tool is free, forever, with no watermark. What funds it: an optional AI Master — a premium, track-specific master you can preview for free and unlock watermark-free for a small one-time fee — plus unobtrusive ads on our content pages. That's it. No data selling, no locking the basics behind a paywall.
Who's behind it
TrackGleam is built and maintained by independent music people who were tired of choosing between expensive mastering and bad-sounding free tools. It started life as Auracle and was renamed to something more distinctive — same engine, same privacy-first approach, every past purchase and AURA- code still valid. Have feedback or an idea? We'd genuinely love to hear it: contact us.