# Spectrum AUv3 FFT Visualizer vs pOus

The clearest difference is update cadence: pOus at every 4 months against Spectrum AUv3 FFT Visualizer's every 12 months. pOus also leads on iOS requirement (12.0 vs 15.0). Spectrum AUv3 FFT Visualizer's advantage is price ($0.99 vs $2.99). On ads, in-app purchases and device support there is nothing between them.

Spectrum AUv3 FFT Visualizer costs $0.99 and pOus $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Spectrum AUv3 FFT Visualizer ships an update every 12 months, pOus every 4 months. The most recent releases landed on October 18, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Spectrum AUv3 FFT Visualizer | pOus |
| --- | --- | --- |
| Price | **$0.99** | $2.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pous/id6748279554/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 4 months** |
| Monetization | — | Paid |
| Size | 10 MB | 15 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DiscoDSP LLC](https://appshunter.io/developer/1465262828) | [Satoshi Kajii](https://appshunter.io/developer/1777441634) |

## What reviewers say

### Spectrum AUv3 FFT Visualizer

[App page](https://appshunter.io/ios/app/spectrum-auv3-fft-visualizer/id6737164438)

**Features:** macOS Compatibility

**In-app purchases:** none


### pOus

[App page](https://appshunter.io/ios/app/pous/id6748279554)

This app emulates analog drum machine bass drums with adjustable tuning and decay. It offers MIDI OUT functionality for envelope follower data and a scale mode for playing musical scales. Designed for musicians using AUv3 hosts.

**Highlights:** BassDrum emulation, Adjustable tune and decay, MIDI OUT envelope follower, Scale mode for musical notes, AUv3 instrument, MIDI CC routing

**In-app purchases:** none


## Frequently asked questions

### Is Spectrum AUv3 FFT Visualizer free?

Spectrum AUv3 FFT Visualizer costs $0.99, with no in-app purchases.

### Is pOus free?

pOus costs $2.99, with no in-app purchases.

### Do Spectrum AUv3 FFT Visualizer or pOus have ads?

Neither Spectrum AUv3 FFT Visualizer nor pOus shows ads.

### Which is updated more often, Spectrum AUv3 FFT Visualizer or pOus?

Spectrum AUv3 FFT Visualizer ships an update every 12 months, and pOus every 4 months. Most recently, Spectrum AUv3 FFT Visualizer was updated on October 18, 2026 and pOus on October 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*