Flarex

Yes. Flarex is completely free to download and use under a proprietary freeware license. No trial, no watermark, no feature limits.

From 0–100%, Flarex uses a power-constant mid/side cos/sin law so perceived loudness stays stable as you narrow or widen. Above 100%, it uses cascaded all-pass decorrelation that adds perceived width which survives a mono fold-down — so there's no phase cancellation when your track is summed to mono.

A hysteresis correlation monitor that watches your stereo image. When correlation drops into risky territory, it automatically eases the effective width back toward 50% and restores smoothly once the phase relationship recovers. A Deep-Dive Hard Mute collapses to mono on severe phase inversion, with click-free crossfades throughout.

Bass Mono uses a Linkwitz-Riley crossover to collapse low-frequency side content to mono below an adjustable frequency (20–500Hz). This keeps your low end tight, centered, and club-safe while the rest of the spectrum stays wide.

A 128×128 teal-to-orange density map rendered inside the vectorscope. Teal shows side-heavy energy and orange shows mid-heavy energy, so you can read at a glance where your stereo energy sits. Use SNAP to freeze a ghost overlay and compare A/B as you tweak.

Yes. Flarex is a Universal Binary that runs natively on Apple Silicon (M1/M2/M3/M4) and Intel Macs, and ships as a 64-bit build for Windows 10 and 11.