Chorus D vs Spectrum AUv3 FFT Visualizer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chorus D
This audio unit effect emulates a classic chorus stomp-box with a unique, subtle sound. It offers a wider stereo image and thicker sound without the typical pitch-wavy artifacts. Its simplified interface provides a range of tasteful tones.
- Subtle stereo pitch-shifting
- Constant pitch-shift amounts
- Stereo image widening
- Sound thickening
- Six tasteful presets
- Unique sound profile
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Chorus D is an audio unit effect inspired by a well-loved classic chorus stomp-box. HOW IS IT DIFFERENT FROM OTHER CHORUS EFFECTS? It's more subtle. It has a stereo pair of pitch-shifters, one shifts up and the other down. Every few seconds, the two pitch shifters trade places: the high one goes low and the low one goes high. Unlike most other chorus effects, the pitch-shift amounts stay constant rather than oscillating up and down. For that reason, you don't hear the wavy pitch sound that other chorus effects make. At low settings, you can put it on a track to widen the stereo image or thicken up the sound and listeners may not be able to identify that they are hearing a chorus effect. WHY ONLY SIX BUTTONS? The original hardware that inspired this design had only four buttons and four presets, one for each button.* The simplicity of the controls is one of the reasons the effect was so well-liked: all four presets sounded great. With six buttons you get tones ranging from very subtle to clearly audible, and all of them are tasteful and useful. This effect makes only one type of sound but it's a unique sound that you don't get from other chorus effects. IS THIS AN EXACT CIRCUIT MODEL OF THE ORIGINAL HARDWARE EFFECT? No. We listened to the original and studied its design but then we built an effect to please our own ears. It sounds similar to the original but the design is unique. ************************************ Note: this is an audio unit plugin. It does not process audio as a standalone app. *Later on customers figured out that they could get some other settings by pressing two buttons simultaneously or forcing all the buttons off. We are using six buttons to get wider variety of sounds rather than expecting customers to discover those secret features of the original hardware.
Spectrum AUv3 FFT Visualizer
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Turn sound into stunning visuals with Spectrum, an AUv3-compatible real-time spectrum analyzer for audio signals. Effortlessly monitor 29 specific frequencies from 10 Hz to 20 kHz with precision, powered by Fast Fourier Transform (FFT) data. Spectrum’s sleek graphics feature vertical markers, filled paths, and a smooth gradient background for an immersive visual experience. Enjoy accurate frequency placement with logarithmic scaling, and interact seamlessly using touch to highlight specific frequencies. Designed for performance, it dynamically adjusts to real-time data, transforms decibels, and ensures smooth, optimized rendering for flawless updates.
Screenshots
Verdict
The clearest difference is price: Spectrum AUv3 FFT Visualizer at $0.99 against Chorus D's $5.99. Chorus D's advantage is iOS requirement (12.0 vs 15.0). On update cadence, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Chorus D costs $5.99 and Spectrum AUv3 FFT Visualizer $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Chorus D ships an update every 7 months, Spectrum AUv3 FFT Visualizer every 12 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | Chorus D | Spectrum AUv3 FFT Visualizer |
|---|---|---|
| Price | $5.99 | $0.99 — better |
| Rating | 5.0 (6 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 7 months — better | Every 12 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 11 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Blue Mangoo Consulting Company Limited | DiscoDSP LLC |
In-app purchases
Chorus D
No in-app purchases
Spectrum AUv3 FFT Visualizer
No in-app purchases
Questions
Is Chorus D free?
Is Spectrum AUv3 FFT Visualizer free?
Do Chorus D or Spectrum AUv3 FFT Visualizer have ads?
Which is updated more often, Chorus D or Spectrum AUv3 FFT Visualizer?
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