# Audio Frequency Analyzer vs Decibel

The clearest difference is price: Decibel at Free against Audio Frequency Analyzer's $9.99. Decibel also leads on rating (4.6 vs 3.7) and ratings volume (36K vs 3). Audio Frequency Analyzer's advantage is in-app purchases (none vs 10). On review sentiment and ads there is nothing between them.

Decibel is free to download; Audio Frequency Analyzer costs $9.99 up front. Decibel sells 10 in-app purchases, starting at $1.99 per 7 days. Audio Frequency Analyzer asks for nothing beyond the download.

Decibel holds the better App Store score, 4.6 against 3.7. That said, the two scores are not equally well evidenced: Decibel has 36K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 60% of Audio Frequency Analyzer's written reviews are positive against 66% of Decibel's.

Audio Frequency Analyzer ships an update every 8 months, Decibel every 2 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Audio Frequency Analyzer | Decibel |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/audio-frequency-analyzer/id684641742/reviews) | **[4.6 (36K ratings)](https://appshunter.io/ios/app/decibel-db-sound-level-meter/id1227650795/reviews)** |
| Number of ratings | 3 | **36K** |
| Positive reviews | 60.0% of reviews | **65.8% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 months** |
| Monetization | Paid | **Freemium** |
| Size | 0 MB | 56 MB |
| Requires iOS | 26.2 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [TOON,LLC](https://appshunter.io/developer/633948723) | [Vlad Polyanskiy](https://appshunter.io/developer/438646985) |

## What reviewers say

### Audio Frequency Analyzer

[App page](https://appshunter.io/ios/app/audio-frequency-analyzer/id684641742)

This real-time audio analyzer measures and evaluates sound environments with 1/3 octave band frequency response and FFT analysis. It supports calibration for high accuracy and is suitable for various audio testing and tuning applications.

**Highlights:** Real-time frequency spectrum response measurement (1/3 octave, 30 bands), FFT Analyzer, Observation frequency range: 20 - 23000 Hz, Calibration function for high accuracy, Supports built-in and external microphones, Snapshot and averaging functions

**In-app purchases:** none


### Decibel

[App page](https://appshunter.io/ios/app/decibel-db-sound-level-meter/id1227650795)

Transform your device into a professional sound level meter and audio analyzer. Measure ambient noise, monitor decibel levels, and visualize sound frequencies in real time. It also offers advanced sleep tracking with sound recognition to identify disruptions.

**Highlights:** Real-time decibel (dB) sound level monitoring, Integrated Spectrum Analyzer (FFT, spectrogram), Sleep tracking with sound recognition, Noise exposure data export to Health app, Add sound level overlays to photos/videos, Save, export, and playback sound measurements

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Mode | $1.99 | per 7 days |
| Premium Plus | $4.99 | per month |
| Premium Mode | $7.99 | per month |
| Premium Mode Subscription | $9.99 | per month |
| Premium Mode | $29.99 | per year |
| dB Meter Pro | $4.99 | one-time |
| Noise Dosimeter Pro | $9.99 | one-time |
| Decibel Meter Pro | $19.99 | one-time |
| Spectrum Analyzer Pack | $24.99 | one-time |
| dB Meter Premium Pack | $49.99 | one-time |

**What reviewers like**

- 👍 Useful for monitoring noise levels
- 🔍 Accurate for a phone app
- 🔧 Good for calibrating audio equipment
- 💡 Helpful for hearing protection
- 📊 Provides detailed measurements

**What reviewers complain about**

- 💰 Aggressive upselling tactics
- 🔒 Privacy concerns around data collection
- 🕹️ Confusing free vs paid options
- 🔁 Recurring subscription issues
- 🔢 Inconsistent/inaccurate readings

**Reported bugs**

- App crashes or freezes during use
- Subscription issues and unwanted charges
- Microphone compatibility problems

**Requested features**

- Add option to set noise level alerts
- Improve geolocation and recording features
- Allow audio playback while using the app
- Provide more calibration options


## Frequently asked questions

### Is Audio Frequency Analyzer free?

Audio Frequency Analyzer costs $9.99, with no in-app purchases.

### Is Decibel free?

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

### Which has better reviews, Audio Frequency Analyzer or Decibel?

Decibel is rated higher. Audio Frequency Analyzer averages 3.7 out of 5 from 3 ratings, while Decibel averages 4.6 from 36K ratings.

### Do Audio Frequency Analyzer or Decibel have ads?

Neither Audio Frequency Analyzer nor Decibel shows ads.

### Which is updated more often, Audio Frequency Analyzer or Decibel?

Audio Frequency Analyzer ships an update every 8 months, and Decibel every 2 months. Most recently, Audio Frequency Analyzer was updated on November 1, 2026 and Decibel on November 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.*