# Scan vs Spectrum Analyzer+ Audio FFT

The clearest difference is ads: Scan at none against Spectrum Analyzer+ Audio FFT's shown. Scan also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.0). Spectrum Analyzer+ Audio FFT's advantage is update cadence (weekly vs every 5 months). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scan ships an update every 5 months, Spectrum Analyzer+ Audio FFT weekly. Both last shipped on October 3, 2026.

## The numbers

| Metric | Scan | Spectrum Analyzer+ Audio FFT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.3 (3 ratings)](https://appshunter.io/ios/app/spectrum-analyzer-plus-audio-fft/id6760830858/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Weekly** |
| Monetization | — | Ad-supported |
| Size | 138 MB | 69 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [SISELSE DE MEXICO](https://appshunter.io/developer/1207452037) | [Kyu-Hee Jang](https://appshunter.io/developer/1587578867) |

## What reviewers say

### Scan

[App page](https://appshunter.io/ios/app/scan/id1347291471)

**Features:** macOS Compatibility

**In-app purchases:** none


### Spectrum Analyzer+ Audio FFT

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

This utility transforms your device into a real-time audio frequency analyzer. It visualizes sound frequencies from 20 Hz to 20 kHz using the microphone, displaying amplitude and peak frequencies. It's designed for musicians, audio engineers, and sound enthusiasts.

**Highlights:** Real-time FFT audio spectrum visualization, Frequency range 20 Hz to 20 kHz, Peak frequency detection, Average dB level per band, Adjustable dB range, Dark theme

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

**In-app purchases:** none


## Frequently asked questions

### Is Scan free?

Scan is free to download, with no in-app purchases.

### Is Spectrum Analyzer+ Audio FFT free?

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

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

Spectrum Analyzer+ Audio FFT shows ads; Scan does not.

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

Scan ships an update every 5 months, and Spectrum Analyzer+ Audio FFT weekly. Most recently, Scan was updated on October 3, 2026 and Spectrum Analyzer+ Audio FFT on October 3, 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.*