Affiliate disclosure: the "Get this deal" button is an affiliate link to the store. If you buy through it we earn a commission at no extra cost to you. Full policy
The spiral Black Friday deal puts 60% off Photosounder's music analysis plugin, priced at $39 and running until Nov 22, 2026. It's a spectral analyser built to show you the notes in a mix at a glance.
Spiral is a spectral analysis plugin for reading music visually. The maker calls it a fresh take on the genre, aimed at letting you see and understand the notes in a recording instantly.
Instead of a flat frequency graph, it coils the spectrum into a spiral. A chromatic circle frames that spiral, so musical and spectral activity show up in one picture.
Colour carries stereo position. The maker says that means instruments often end up with a colour of their own.
You can rotate the spiral so the root of the scale sits at the top. That makes it easier to recognise notes as they land on the circle.
Click the visualisation and it creates overlays showing the harmonics for a given note. Moving those overlays around helps you pick out the individual notes inside a chord.
Portions of the sound can be recorded into spiral's memory and played back much slower, anywhere from 0% to 100% of normal speed. The maker says this is handy when writing down notes or analysing chords.
Resolution is yours to set. Lower it for very fast passages, where it gives you more precision in time.
Raise it for complex chords, bass instruments or tuning an instrument.
On Windows, spiral runs on Windows 7 and up as a VST in 32-bit and 64-bit.
On Mac, it comes as VST and Audio Unit, both 32-bit and 64-bit. It is not compatible with any macOS above 10.15, so if you're on a newer system, keep that limit in mind.
Yes. The spiral Black Friday deal takes 60% off Photosounder's spectral analysis plugin, bringing it to $39. The offer ends Nov 22, 2026.
Spiral is a music analysis plugin. It coils the spectrum into a spiral framed by a chromatic circle, so you can see the notes in a piece of music instantly. Colours show where sounds sit in the stereo mix.
Spiral is a VST in 32-bit and 64-bit on Windows 7 and up. On Mac it comes as VST and Audio Unit, both 32-bit and 64-bit, and it does not work on any macOS above 10.15.
You can click the visualisation to create harmonic overlays for a note, and adjusting them helps you identify the notes in a chord. Slow-motion playback from 0% to 100% speed and adjustable resolution support the same job.
Prices and end dates are checked at publishing time and can change, so confirm them at the store before you buy.