# dB Meter & Spectrum Analyzer vs Low Frequency Detector

The clearest difference is price: Low Frequency Detector at $9.99 against dB Meter & Spectrum Analyzer's $29.99. Low Frequency Detector also leads on in-app purchases (none vs 1). dB Meter & Spectrum Analyzer's advantage is rating (4.7 vs 2.8) and ratings volume (865 vs 6). On ads there is nothing between them.

dB Meter & Spectrum Analyzer costs $29.99 and Low Frequency Detector $9.99 up front. dB Meter & Spectrum Analyzer sells 1 one-off in-app purchase. Low Frequency Detector asks for nothing beyond the download.

dB Meter & Spectrum Analyzer holds the better App Store score, 4.7 against 2.8. That said, the two scores are not equally well evidenced: dB Meter & Spectrum Analyzer has 865 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 66% of dB Meter & Spectrum Analyzer's written reviews are positive against 50% of Low Frequency Detector's.

dB Meter & Spectrum Analyzer ships an update every 4 months, Low Frequency Detector every 9 months. The most recent releases landed on October 20, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | dB Meter & Spectrum Analyzer | Low Frequency Detector |
| --- | --- | --- |
| Price | $29.99 | **$9.99** |
| Rating | **[4.7 (865 ratings)](https://appshunter.io/ios/app/db-meter-and-spectrum-analyzer/id733773616/reviews)** | [2.8 (6 ratings)](https://appshunter.io/ios/app/low-frequency-detector/id1196584147/reviews) |
| Number of ratings | **865** | 6 |
| Positive reviews | **65.8% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 9 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 88 MB | 1 MB |
| Requires iOS | **11.3** | 26.2 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Vlad Polyanskiy](https://appshunter.io/developer/438646985) | [TOON,LLC](https://appshunter.io/developer/633948723) |

## What reviewers say

### dB Meter & Spectrum Analyzer

[App page](https://appshunter.io/ios/app/db-meter-and-spectrum-analyzer/id733773616)

Measure ambient noise levels with professional-quality accuracy. This app offers a spectrum analyzer, hearing test, and the ability to save and share measurements with location data. It's a powerful, cost-effective tool for personal sound monitoring.

**Highlights:** Professional-quality sound level measurement, Integrated spectrum analyzer, Noise dosimeter (NIOSH/OSHA), Photo & video with noise overlay, Hearing test, Save and export measurements (CSV/Audio), Health App integration

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spectrum Analyzer Pro | $14.99 | one-time |

**What reviewers like**

- 🚀 Excellent
- 👍 Simple, precise and excellent
- 👍 Great app!!!!
- 👍 Well around app for monitoring noise
- 👍 Nice proof

**What reviewers complain about**

- 🐛 Crash with iOS 26
- 🐛 Paid for and it stopped working
- 🐛 App failed to open on iPad Pro 11
- 🐛 Will not run
- 🐛 Ok for DB but not for actually recording sound

**Reported bugs**

- Crash with iOS 26
- App failed to open on iPad Pro 11
- Will not run
- Video is recorded without sound
- Failing to restore purchase

**Requested features**

- Dark mode option
- Advanced analytics dashboard
- Ability to export recorded audio clips
- Frequency display on RTA bar


### 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


## Frequently asked questions

### Is dB Meter & Spectrum Analyzer free?

dB Meter & Spectrum Analyzer costs $29.99, and also offers in-app purchases.

### Is Low Frequency Detector free?

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

### Which has better reviews, dB Meter & Spectrum Analyzer or Low Frequency Detector?

dB Meter & Spectrum Analyzer is rated higher. dB Meter & Spectrum Analyzer averages 4.7 out of 5 from 865 ratings, while Low Frequency Detector averages 2.8 from 6 ratings.

### Do dB Meter & Spectrum Analyzer or Low Frequency Detector have ads?

Neither dB Meter & Spectrum Analyzer nor Low Frequency Detector shows ads.

### Which is updated more often, dB Meter & Spectrum Analyzer or Low Frequency Detector?

dB Meter & Spectrum Analyzer ships an update every 4 months, and Low Frequency Detector every 9 months. Most recently, dB Meter & Spectrum Analyzer was updated on October 20, 2026 and Low Frequency Detector on October 6, 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.*