# dB Meter & Spectrum Analyzer vs ESF Mobile

The clearest difference is price: ESF Mobile at Free against dB Meter & Spectrum Analyzer's $29.99. ESF Mobile also leads on in-app purchases (none vs 1) and update cadence (fortnightly vs every 4 months). dB Meter & Spectrum Analyzer's advantage is iOS requirement (11.3 vs 15.5). On ads and device support there is nothing between them.

ESF Mobile is free to download; dB Meter & Spectrum Analyzer costs $29.99 up front. dB Meter & Spectrum Analyzer sells 1 one-off in-app purchase. ESF Mobile asks for nothing beyond the download.

dB Meter & Spectrum Analyzer ships an update every 4 months, ESF Mobile fortnightly. Both last shipped on October 28, 2026.

## The numbers

| Metric | dB Meter & Spectrum Analyzer | ESF Mobile |
| --- | --- | --- |
| Price | $29.99 | **Free** |
| Rating | **[4.7 (866 ratings)](https://appshunter.io/ios/app/db-meter-and-spectrum-analyzer/id733773616/reviews)** | — |
| Number of ratings | **866** | — |
| Positive reviews | 65.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 88 MB | 87 MB |
| Requires iOS | **11.3** | 15.5 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vlad Polyanskiy](https://appshunter.io/developer/438646985) | [UC Merced](https://appshunter.io/developer/1148124271) |

## 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


### ESF Mobile

[App page](https://appshunter.io/ios/app/esf-mobile/id6752670873)

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

**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 ESF Mobile free?

ESF Mobile is free to download, with no in-app purchases.

### Do dB Meter & Spectrum Analyzer or ESF Mobile have ads?

Neither dB Meter & Spectrum Analyzer nor ESF Mobile shows ads.

### Which is updated more often, dB Meter & Spectrum Analyzer or ESF Mobile?

dB Meter & Spectrum Analyzer ships an update every 4 months, and ESF Mobile fortnightly. Most recently, dB Meter & Spectrum Analyzer was updated on October 28, 2026 and ESF Mobile on October 28, 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.*