# Low Frequency Detector vs Decibel Meter · Sound Analyzer

The clearest difference is price: Decibel Meter · Sound Analyzer at Free against Low Frequency Detector's $9.99. Decibel Meter · Sound Analyzer also leads on rating (4.7 vs 2.8) and review sentiment (78% vs 50%). Low Frequency Detector's advantage is in-app purchases (none vs 8). On ads and device support there is nothing between them.

Decibel Meter · Sound Analyzer is free to download; Low Frequency Detector costs $9.99 up front. Decibel Meter · Sound Analyzer sells 8 in-app purchases, starting at $1.99 per 7 days. Low Frequency Detector asks for nothing beyond the download.

Decibel Meter · Sound Analyzer holds the better App Store score, 4.7 against 2.8. That said, the two scores are not equally well evidenced: Decibel Meter · Sound Analyzer has 1.3K ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 50% of Low Frequency Detector's written reviews are positive against 78% of Decibel Meter · Sound Analyzer's.

Low Frequency Detector ships an update every 9 months, Decibel Meter · Sound Analyzer every 2 months. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Low Frequency Detector | Decibel Meter · Sound Analyzer |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [2.8 (6 ratings)](https://appshunter.io/ios/app/low-frequency-detector/id1196584147/reviews) | **[4.7 (1.3K ratings)](https://appshunter.io/ios/app/decibel-meter-sound-analyzer/id1624503658/reviews)** |
| Number of ratings | 6 | **1.3K** |
| Positive reviews | 50.0% of reviews | **78.1% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 41 MB |
| Requires iOS | 26.2 | **18.6** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [TOON,LLC](https://appshunter.io/developer/633948723) | [AppLiks Sp. z O.O.](https://appshunter.io/developer/1804335622) |

## 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


### Decibel Meter · Sound Analyzer

[App page](https://appshunter.io/ios/app/decibel-meter-sound-analyzer/id1624503658)

Measure ambient noise levels in real-time and track sound exposure duration. This tool displays acoustic intensity in decibels with detailed visual reports and offers features like MIN, AVG, MAX sound level display and photo/video overlays with noise data. It helps protect your health from noise pollution.

**Highlights:** Real-time decibel (dB) meter, MIN, AVG, MAX sound level display, Noise dosimeter compliant with standards, Photo and video with noise overlay, Record measurement results, Data saving feature

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $1.99 | per 7 days |
| Weekly pro access | $3.99 | per 7 days |
| Sound Level Meter (dB) PRO | $3.99 | per 7 days |
| Monthly pro access | $6.99 | per month |
| Yearly Access | $6.99 | per year |
| Decibel Meter & Dosimeter PRO | $6.99 | per month |
| Sound Meter & Dosimeter PRO | $12.99 | per year |
| Yearly pro access | $12.99 | per year |

**What reviewers like**

- 🚀 Great app
- 👍 Recommended
- 💡 Life Saving
- 👍 Good job
- 👍 Fantastic for visual documentation

**What reviewers complain about**

- 🐛 Bad app
- 🐛 Can't test
- 🐛 Subscription pop-up issues
- 🐛 Doesn't work unless you pay

**Reported bugs**

- Microphone issues
- Subscription paywall

**Requested features**

- Make more apps like this one


## Frequently asked questions

### Is Low Frequency Detector free?

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

### Is Decibel Meter · Sound Analyzer free?

Decibel Meter · Sound Analyzer is free to download, with in-app purchases available.

### Which has better reviews, Low Frequency Detector or Decibel Meter · Sound Analyzer?

Decibel Meter · Sound Analyzer is rated higher. Low Frequency Detector averages 2.8 out of 5 from 6 ratings, while Decibel Meter · Sound Analyzer averages 4.7 from 1.3K ratings.

### Do Low Frequency Detector or Decibel Meter · Sound Analyzer have ads?

Neither Low Frequency Detector nor Decibel Meter · Sound Analyzer shows ads.

### Which is updated more often, Low Frequency Detector or Decibel Meter · Sound Analyzer?

Low Frequency Detector ships an update every 9 months, and Decibel Meter · Sound Analyzer every 2 months. Most recently, Low Frequency Detector was updated on November 6, 2026 and Decibel Meter · Sound Analyzer on November 7, 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.*