# Frequency Generator vs Spectrum Analyzer

The clearest difference is in-app purchases: Frequency Generator at none against Spectrum Analyzer's 1. Spectrum Analyzer's advantage is update cadence (daily vs weekly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Spectrum Analyzer sells 1 one-off in-app purchase. Frequency Generator asks for nothing beyond the download.

Frequency Generator ships an update weekly, Spectrum Analyzer daily. Both last shipped on October 31, 2026.

## The numbers

| Metric | Frequency Generator | Spectrum Analyzer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Daily** |
| Size | 4 MB | 1 MB |
| Requires iOS | **17** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nhat Linh Dang](https://appshunter.io/developer/1857899120) | [Josef Dave Llorente](https://appshunter.io/developer/6803405669) |

## What reviewers say

### Frequency Generator

[App page](https://appshunter.io/ios/app/frequency-generator-sound-test/id6785086354)

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

**In-app purchases:** none


### Spectrum Analyzer

[App page](https://appshunter.io/ios/app/spectrum-analyzer-audio-fft/id6803405667)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spectrum Analyzer - Audio FFT | $1.99 | one-time |


## Frequently asked questions

### Is Frequency Generator free?

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

### Is Spectrum Analyzer free?

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

### Do Frequency Generator or Spectrum Analyzer have ads?

Neither Frequency Generator nor Spectrum Analyzer shows ads.

### Which is updated more often, Frequency Generator or Spectrum Analyzer?

Frequency Generator ships an update weekly, and Spectrum Analyzer daily. Most recently, Frequency Generator was updated on October 31, 2026 and Spectrum Analyzer on October 31, 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.*