# Frequency Counter+ Hz FFT vs Frequency Analyzer

The clearest difference is in-app purchases: Frequency Counter+ Hz FFT at none against Frequency Analyzer's 2. Frequency Counter+ Hz FFT also leads on update cadence (every 4 days vs every 10 days). Frequency Analyzer's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Frequency Analyzer sells 2 in-app purchases, starting at $4.99 per month. Frequency Counter+ Hz FFT asks for nothing beyond the download.

Frequency Counter+ Hz FFT ships an update every 4 days, Frequency Analyzer every 10 days. The most recent releases landed on August 31, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Frequency Counter+ Hz FFT | Frequency Analyzer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (6 ratings)](https://appshunter.io/ios/app/frequency-counter-plus-hz-fft/id6761234058/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Every 10 days |
| Monetization | Ad-supported | — |
| Size | 69 MB | 2 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Kyu-Hee Jang](https://appshunter.io/developer/1587578867) | [RAMAZAN USEN](https://appshunter.io/developer/1783434185) |

## What reviewers say

### Frequency Counter+ Hz FFT

[App page](https://appshunter.io/ios/app/frequency-counter-plus-hz-fft/id6761234058)

This app transforms your iPhone into a powerful audio analyzer. It offers four distinct modes to measure sound frequencies, tune instruments, analyze motor speeds, and check mains stability. Advanced features include measurement history, comparison tools, and CSV export.

**Highlights:** Dominant frequency measurement (Hz), Instrument tuning with note and pitch display, Motor RPM analysis, 50/60 Hz mains hum detection, Measurement history and trend charts, CSV export of measurements

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

**In-app purchases:** none


### Frequency Analyzer

[App page](https://appshunter.io/ios/app/frequency-analyzer/id6762404295)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SpectraLab Pro Monthly | $4.99 | per month |
| SpectraLab Pro Yearly | $24.99 | per year |


## Frequently asked questions

### Is Frequency Counter+ Hz FFT free?

Frequency Counter+ Hz FFT is free to download, with no in-app purchases.

### Is Frequency Analyzer free?

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

### Do Frequency Counter+ Hz FFT or Frequency Analyzer have ads?

Frequency Counter+ Hz FFT shows ads; Frequency Analyzer does not.

### Which is updated more often, Frequency Counter+ Hz FFT or Frequency Analyzer?

Frequency Counter+ Hz FFT ships an update every 4 days, and Frequency Analyzer every 10 days. Most recently, Frequency Counter+ Hz FFT was updated on August 31, 2026 and Frequency Analyzer on September 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.*