# Low Frequency Detector vs Frequency Analyzer

The clearest difference is price: Frequency Analyzer at Free against Low Frequency Detector's $9.99. Frequency Analyzer also leads on rating (4.5 vs 2.8) and update cadence (every 8 days vs every 9 months). Low Frequency Detector's advantage is review sentiment (50% vs 10%) and in-app purchases (none vs 11). On ads and device support there is nothing between them.

Frequency Analyzer is free to download; Low Frequency Detector costs $9.99 up front. Frequency Analyzer sells 11 in-app purchases, starting at $2.99 per 7 days. Low Frequency Detector asks for nothing beyond the download.

Frequency Analyzer holds the better App Store score, 4.5 against 2.8. That said, the two scores are not equally well evidenced: Frequency Analyzer has 179 ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 50% of Low Frequency Detector's written reviews are positive against 10% of Frequency Analyzer's, so the app with the better star average is not the one people write more warmly about.

Low Frequency Detector ships an update every 9 months, Frequency Analyzer every 8 days. The most recent releases landed on October 6, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Low Frequency Detector | Frequency Analyzer |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [2.8 (6 ratings)](https://appshunter.io/ios/app/low-frequency-detector/id1196584147/reviews) | **[4.5 (179 ratings)](https://appshunter.io/ios/app/frequency-analyzer/id6468837339/reviews)** |
| Number of ratings | 6 | **179** |
| Positive reviews | **50.0% of reviews** | 10.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 8 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 35 MB |
| Requires iOS | 26.2 | **17.2** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [TOON,LLC](https://appshunter.io/developer/633948723) | [Manfred Kuegel](https://appshunter.io/developer/1520736594) |

## What reviewers say

### Low Frequency Detector

[App page](https://appshunter.io/ios/app/low-frequency-detector/id1196584147)

This tool measures and analyzes low-frequency sounds that are difficult for the human ear to detect. It helps identify potential noise pollution from sources like construction or factories, providing detailed reports on frequency components and sound levels.

**Highlights:** Low-frequency power level measurement (<100Hz), Audible band power level measurement (Leq), 1/3 octave band analysis (OCT), FFT analysis (FFT), Time course graph (TIME), Measurement report generation, Calibration function

**In-app purchases:** none


### Frequency Analyzer

[App page](https://appshunter.io/ios/app/frequency-analyzer/id6468837339)

Transform your device into a professional audio analysis tool with advanced FFT analysis, SPL monitoring, and detailed visualizations. Record, analyze, and export audio data with precision calibration and multiple weighting filters.

**Highlights:** Real-time FFT analysis, Calibrated SPL measurements, 32-bit float audio recording, Synchronized video recording, Spectrogram and octave band analysis, Export WAV, CSV, images, and videos

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Frequency Analyzer Pro Weekly | $2.99 | per 7 days |
| Frequency Analyzer Pro Monthly | $3.99 | per month |
| Frequency Analyzer Pro Monthly | $3.99 | per month |
| Frequency Analyzer Pro Monthly | $4.99 | per month |
| Frequency Analyzer Pro Monthly | $4.99 | per month |
| Frequency Analyzer Pro Monthly | $4.99 | per month |
| Frequency Analyzer Pro Annual | $29.99 | per year |
| Frequency Analyzer Pro Annual | $44.99 | per year |
| Frequency Analyzer Pro Annual | $44.99 | per year |
| Frequency Analyzer Pro Annual | $44.99 | per year |
| Pro access for lifetime | $89.99 | one-time |


## Frequently asked questions

### Is Low Frequency Detector free?

Low Frequency Detector costs $9.99, with no in-app purchases.

### Is Frequency Analyzer free?

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

### Which has better reviews, Low Frequency Detector or Frequency Analyzer?

Frequency Analyzer is rated higher. Low Frequency Detector averages 2.8 out of 5 from 6 ratings, while Frequency Analyzer averages 4.5 from 179 ratings.

### Do Low Frequency Detector or Frequency Analyzer have ads?

Neither Low Frequency Detector nor Frequency Analyzer shows ads.

### Which is updated more often, Low Frequency Detector or Frequency Analyzer?

Low Frequency Detector ships an update every 9 months, and Frequency Analyzer every 8 days. Most recently, Low Frequency Detector was updated on October 6, 2026 and Frequency Analyzer on October 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.*