A precision meter for loudness, true peak, dynamics, stereo image and tonal balance — with two views: Dive for a close look, Ascend for the at-a-glance verdict.
Arcoline reads everything once, then shows it at two densities — switch any time with Tab.
Every reading on one screen — for when you're diagnosing a problem or running a mastering QC pass.
One big loudness number and a ±LU delta against your target — the “am I safe?” answer, glanceable while you create.
Everything you'd otherwise open three meters to see — with built-in targets for Spotify, Apple Music, YouTube, broadcast and film. The manual covers every reading in full.
Momentary, Short-term and Integrated LUFS — the number platforms normalize to.
Inter-sample dBTP with a sticky over-flag, so a stray transient can't slip past.
Per-channel peak & RMS with peak-hold and clip detection.
PSR, PLR and loudness range — how squashed or open your master is.
Goniometer, phase correlation and L/R balance — a fast phase-safety check.
Low / mid / high energy split — catches a bass-heavy mix or a brittle top.
The centre of Dive doesn't just change what it shows — it changes what kind of instrument it is. Click Loudness, Phase or Histogram and it morphs, holding the same measurement throughout.
A time-at-level distribution, drawn on the dial's own printed axis. The shape of your material sits directly against your delivery target and its tolerance band, instead of in a separate window with a separate scale you have to reconcile by eye.
Read it in momentary LUFS or plain RMS — both accumulate at once, so switching units shows you the other view of the same pass rather than starting over. The axis floor adapts to your target and your material, so there's no range knob to manage.
Colour encodes dwell time, never level. The mass tells you where your material lived; the target chrome on the same axis is what judges it.
Free — a VST3 and AU plugin plus a standalone app, for macOS (universal, Intel & Apple Silicon) and Windows.
Prefer Gumroad? Get Arcoline on Gumroad — the same free download, with the option to name a fair price if you'd like to support development.
By downloading, you agree to the End-User License Agreement. Arcoline is built with open-source components — see Third-Party Licenses.
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