# Low Frequency Detector vs SmarterNoise Pro

The clearest difference is price: SmarterNoise Pro at Free against Low Frequency Detector's $9.99. SmarterNoise Pro also leads on rating (4.3 vs 2.8) and update cadence (monthly vs every 9 months). Low Frequency Detector's advantage is in-app purchases (none vs 4) and review sentiment (50% vs 29%). On ads and device support there is nothing between them.

SmarterNoise Pro is free to download; Low Frequency Detector costs $9.99 up front. SmarterNoise Pro sells 4 one-off in-app purchases. Low Frequency Detector asks for nothing beyond the download.

SmarterNoise Pro holds the better App Store score, 4.3 against 2.8. That said, the two scores are not equally well evidenced: SmarterNoise Pro has 33 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 29% of SmarterNoise Pro'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, SmarterNoise Pro monthly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Low Frequency Detector | SmarterNoise Pro |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [2.8 (6 ratings)](https://appshunter.io/ios/app/low-frequency-detector/id1196584147/reviews) | **[4.3 (33 ratings)](https://appshunter.io/ios/app/smarternoise-pro/id1466745030/reviews)** |
| Number of ratings | 6 | **33** |
| Positive reviews | **50.0% of reviews** | 28.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Monthly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 24 MB |
| Requires iOS | 26.2 | **12.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [TOON,LLC](https://appshunter.io/developer/633948723) | [Johan Rogard](https://appshunter.io/developer/1384299041) |

## 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


### SmarterNoise Pro

[App page](https://appshunter.io/ios/app/smarternoise-pro/id1466745030)

This advanced sound level meter app offers detailed audio analysis with features like frequency spectrum display and data export. It allows for precise sound measurements in both video and audio recording modes, with options for A-, C-, or no weighting.

**Highlights:** Sound level measurement in video/audio modes, Frequency spectrum display, Export measurement data (CSV), Sound level activated audio recording, Calibration tool, Full HD video recording (paid)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Camera upgrade | $0.99 | one-time |
| Frequency spectrum indicator | $1.99 | one-time |
| Video and audio recording | $1.99 | one-time |
| Spectrogram display | $1.99 | one-time |


## Frequently asked questions

### Is Low Frequency Detector free?

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

### Is SmarterNoise Pro free?

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

### Which has better reviews, Low Frequency Detector or SmarterNoise Pro?

SmarterNoise Pro is rated higher. Low Frequency Detector averages 2.8 out of 5 from 6 ratings, while SmarterNoise Pro averages 4.3 from 33 ratings.

### Do Low Frequency Detector or SmarterNoise Pro have ads?

Neither Low Frequency Detector nor SmarterNoise Pro shows ads.

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

Low Frequency Detector ships an update every 9 months, and SmarterNoise Pro monthly. Most recently, Low Frequency Detector was updated on October 24, 2026 and SmarterNoise Pro on October 24, 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.*