Spectro overview

Spectro is a macOS app that detects fake lossless audio files in your music library. If you've ever downloaded a WAV or AIFF track that sounds dull or distorted on a professional sound system, the culprit is likely an upconverted MP3 - a low-quality file masquerading as lossless.

Spectro performs spectral analysis on your audio files and delivers an instant verdict: LOSSLESS, LOSSY, or FAKE. No subscriptions, no cloud uploads - everything runs 100% offline on your Mac, keeping your unreleased tracks private.

Key features

Instant fake lossless detection for FLAC, WAV, AIFF, ALAC and MP3 files
Batch-process entire folders, analyze 1000+ tracks in under a minute
Visual spectrogram with frequency cutoff detection
Deep Finder integration: Quick Look, drag & drop, and color tags
One-time purchase, $39 USD, no subscription required
Free trial: scan 100 audio files for free
Fully offline, no internet connection needed

Who is it for?

Spectro is designed for club DJs preparing sets, record pool subscribers cleaning their library, and audiophiles who want to verify the quality of their collection before it hits the speakers.

Stop playing fake lossless files on systems that deserve better.

What's new in version 1.5.3

Fixed

Large batch scans stay within normal memory use across thousands of files, no multi-gigabyte leak or out-of-memory crash
Import no longer crashes when the toolbar updates during analysis
Canceling analysis no longer deadlocks the analysis limiter