# Spectrum Analyzer+ Audio FFT vs Spectrum

The clearest difference is in-app purchases: Spectrum Analyzer+ Audio FFT at none against Spectrum's 3. Spectrum's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Spectrum sells 3 in-app purchases, starting at $1.99 per month. Spectrum Analyzer+ Audio FFT asks for nothing beyond the download.

Spectrum Analyzer+ Audio FFT ships an update every 4 days, Spectrum every 5 days. The most recent releases landed on November 15, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | Spectrum Analyzer+ Audio FFT | Spectrum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.6 (5 ratings)](https://appshunter.io/ios/app/spectrum-analyzer-plus-audio-fft/id6760830858/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 4 days** | Every 5 days |
| Monetization | Ad-supported | — |
| Size | 95 MB | 91 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Kyu-Hee Jang](https://appshunter.io/developer/1587578867) | [SEONYONG LEE](https://appshunter.io/developer/6775892940) |

## What reviewers say

### Spectrum Analyzer+ Audio FFT

[App page](https://appshunter.io/ios/app/spectrum-analyzer-plus-audio-fft/id6760830858)

Visualize live audio frequencies from your microphone, identify peak Hz, and analyze sound components. Capture and average audio over five seconds to pinpoint the strongest frequencies, compare sound changes, and export data. Tailored modes for voice, machines, and room acoustics.

**Highlights:** Live frequency spectrum display, 5-second audio capture and averaging, Peak frequency and level identification, Comparison of sound changes, Specialized modes for voice, machine, and room acoustics, CSV export of spectrum data

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Spectrum

[App page](https://appshunter.io/ios/app/spectrum-audio-analyzer/id6787894411)

**Features:** macOS Compatibility, Vision Pro support, iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $1.99 | per month |
| Pro Yearly | $5.99 | per year |
| Spectrum Pro | $17.99 | one-time |


## Frequently asked questions

### Is Spectrum Analyzer+ Audio FFT free?

Spectrum Analyzer+ Audio FFT is free to download, with no in-app purchases.

### Is Spectrum free?

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

### Do Spectrum Analyzer+ Audio FFT or Spectrum have ads?

Both Spectrum Analyzer+ Audio FFT and Spectrum show ads.

### Which is updated more often, Spectrum Analyzer+ Audio FFT or Spectrum?

Spectrum Analyzer+ Audio FFT ships an update every 4 days, and Spectrum every 5 days. Most recently, Spectrum Analyzer+ Audio FFT was updated on November 15, 2026 and Spectrum on November 12, 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.*