# Spectrum AUv3 FFT Visualizer vs SessionDock

The clearest difference is price: SessionDock at Free against Spectrum AUv3 FFT Visualizer's $0.99. SessionDock also leads on update cadence (every 11 days vs every 12 months). Spectrum AUv3 FFT Visualizer's advantage is in-app purchases (none vs 5) and iOS requirement (15.0 vs 18.6). On ads and device support there is nothing between them.

SessionDock is free to download; Spectrum AUv3 FFT Visualizer costs $0.99 up front. SessionDock sells 5 in-app purchases, starting at $4.99 per month. Spectrum AUv3 FFT Visualizer asks for nothing beyond the download.

Spectrum AUv3 FFT Visualizer ships an update every 12 months, SessionDock every 11 days. Both last shipped on September 20, 2026.

## The numbers

| Metric | Spectrum AUv3 FFT Visualizer | SessionDock |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sessiondock/id6753728022/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 11 days** |
| Monetization | — | Free with in-app purchases |
| Size | 10 MB | 11 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | iPhone, iPad, iPod | iPhone, Mac, Apple TV |
| Age rating | 4+ | 4+ |
| Developer | [DiscoDSP LLC](https://appshunter.io/developer/1465262828) | [WARNER WEB DEVELOPMENT LLC](https://appshunter.io/developer/1777235834) |

## What reviewers say

### Spectrum AUv3 FFT Visualizer

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

**In-app purchases:** none


### SessionDock

[App page](https://appshunter.io/ios/app/sessiondock/id6753728022)

Browse and preview your music projects, notes, and metadata from your Mac on your iPhone. This read-only companion app keeps your desktop library intact while offering waveform note viewing and CarPlay support for on-the-go reference.

**Highlights:** View all saved sessions, Preview session audio/mixdown, Read project notes and metadata, Waveform notes viewer, CarPlay support, Read-only interface

**Features:** Family Sharing, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SessionDock Share Monthly | $4.99 | per month |
| SessionDock Pro | $5.99 | per month |
| SessionDock Share Yearly | $39.99 | per year |
| SessionDock Pro | $49.99 | per year |
| SessionDock Pro (Lifetime) | $39.99 | one-time |


## Frequently asked questions

### Is Spectrum AUv3 FFT Visualizer free?

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

### Is SessionDock free?

SessionDock is free to download, with in-app purchases available.

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

Neither Spectrum AUv3 FFT Visualizer nor SessionDock shows ads.

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

Spectrum AUv3 FFT Visualizer ships an update every 12 months, and SessionDock every 11 days. Most recently, Spectrum AUv3 FFT Visualizer was updated on September 20, 2026 and SessionDock on September 20, 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.*