# Sound Level Analyzer

> Measures sound levels and analyzes sound frequencies with advanced tools. (iPhone/iPad app by TOON,LLC.)

- Source: https://appshunter.io/ios/app/sound-level-analyzer/id886109671 (this page in markdown: same URL + `.md`)
- Developer: [TOON,LLC](https://appshunter.io/developer/633948723)
- Category: Utilities
- Price: $7.99
- Rating: 3.50/5 from 2 App Store ratings · 6 written reviews indexed
- Age rating: 4+
- Requires: iOS 26.2 · 1 MB
- Languages: American English
- Released: 2014-06-10
- Data updated: 2026-08-22
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/sound-level-analyzer/id886109671/reviews.md

## What is Sound Level Analyzer?

"Sound Level Analyzer" is the standard sound level measurement app with sound frequency analysis tools.

It is available for a wide variety of applications, such as measuring ambient noise in neighborhoods, testing audio systems, checking interior noise in vehicles, checking sound at live events, and much more.

"Sound Level Analyzer" has additional analysis features, which are time graph, real-time frequency spectrum analyzer (RTA) and FFT analyzer. It can be used to analyze sound source characteristics.

Features:
# Measurement and Analysis functions
Main (Leq): Sound level measurement (real-time display)
- Sound level measurement (dB): Leq (equivalent noise level), Min (minimum value), Max (maximum value), Avg (time average equivalent noise level)
- Frequency weighting correction characteristics: A (for noise level meter), C (for sound level measurement), Z (no correction)
- Time weighting characteristics: Fast = 0.125 sec, Slow = 1.0 sec

Power Spectrum (P.S.): View of frequency spectrum analysis (real time display)
- Spectrum analyzer function: FFT analysis, 1/3-octave band response analysis.
- FFT frequency range settings: 100Hz - 20kHz (FFT all) / 100Hz - 3kHz / 3k - 6kHz
- Measured value display function in 1/3 oct band response analysis. (OctVal)
- Power spectrum display function at the time of occurrence of Max. (Display Max)

# Control functions
- Calibration: level correction value setting, -20 to +20dB
- Measurement timer: 1 minute / 5 minutes / 10 minutes / 15 minutes / 20 minutes / 30 minutes / 1 hours
- Snapshot (Snap): Save measurement display with time stamp to Photos. 

Applications:
- Live Sound 
- Environmental noise measurement 
- Installation of audio equipment 
- Tuning of audio equipment
- Architectural acoustics 
- Broadcast 
- Device management

Example of the noise level situation: 
 - 130dB: Engine sound of Airplane
 - 110dB: Horn of Car
 - 100dB: Noise of passing train
 - 90dB: In loud factory
 - 80dB: In the train, Vacuum cleaner
 - 70dB: Noisy office, Noisy Street
 - 60dB: Quiet Car, Normal conversation
 - 50dB: Quiet office
 - 40dB: In the library, Quiet residential area
 - 30dB: Outskirts of midnight, Whisper
 - 20dB: Sounds of rubbing leaves

Note: The first time the app accesses the built-in microphone and Photos after installation, the iOS system will ask you for permission to access them. If you have not enabled this setting, the application will not be able to access them due to iOS system privacy restrictions. Please enable the access permission in the iOS setting "Settings > Privacy & Security > Photos or Microphone".

Please visit our iOS app support page for more information on this app.

## Key features

- Sound level measurement (Leq, Min, Max, Avg)
- Frequency weighting (A, C, Z)
- Time weighting (Fast, Slow)
- Real-time frequency spectrum analyzer (RTA)
- FFT analysis
- Calibration and measurement timer
- Snapshot saving

## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/sound-level-analyzer/id886109671/reviews.md

### 5/5 — 素晴らしいアプリです。

*2024-12-08*

車のNVHを測定したくて購入しました。UIの優れた多機能なアプリで車内騒音を簡単に計測でき、車のSNS みんカラに投稿させて頂きました（Googleで「ZR-VのNVH」で検索すれば、最初に出てくると思います）。ただ、使い方が間違っていないか少し不安ですので、コメント（みんカラのコメントでも結構ですので）を頂けると嬉しいです。今後のバージョンアップも宜しくお願いします。

### 4/5 — Bring back the previous colour scheme and icon.

*2018-11-24*

New ones are dull, pale and uninspiring

### 4/5 — 200Hz未満も表示して欲しい

*2016-09-18*

1/3オクターブバンドやFFT表示の時に200Hz未満の周波数も測定・表示して欲しい。(可能であれば0㎐から)
一番測定したかった周波数帯がその辺りだったため。また最大測定値の履歴が表示される機能もあると便利だと思った。
（他の無料アプリで付いていた機能）
計測時間もエンドレスが欲しい。これらの機能付加を切に望みます。
測定器は買うと高いが、このアプリは手軽で使いやすく便利なため、今後のアップデートに大いに期待しています。

### 4/5 — 車内の騒音計測に使用

*2015-10-11*

時系列計測は大変よい機能だと思います。不満な点は画面から消えてしまった時間の計測結果が遡って見られないことです。計測結果を保存できるとなお良いと思います。

### 2/5 — Bug in version 1.2

*2015-05-17*

Ver 1.1 was great; everything worked. Ver 1.2 stops sampling when iPhone locks. Must keep iPhone unlocked to use-- no good. Have reverted back to ver 1.1.

### 4/5 — なかなかいいです

*2015-03-08*

撥弦楽器であるチェンバロの整音用に買いました。撥弦直後の音量と減衰曲線が分かりやすいです。
もし可能ならグラフの縦軸（db）のスケールが変えられると嬉しいです。
あとグラフに補助軸を任意に入れられると嬉しいです。
今後もよろしくお願いします。

## Frequently asked questions about Sound Level Analyzer

### What is Sound Level Analyzer used for?

Sound Level Analyzer is used for measuring ambient noise in neighborhoods, testing audio systems, checking interior noise in vehicles, and analyzing sound at live events. It provides detailed sound level measurements and frequency analysis.

### What are the advanced analysis features of Sound Level Analyzer?

Sound Level Analyzer offers a time graph, a real-time frequency spectrum analyzer (RTA), and FFT analysis. These tools help in analyzing sound source characteristics and understanding the frequency components of sound.

### Does Sound Level Analyzer require microphone access?

Yes, Sound Level Analyzer requires access to your device's built-in microphone to perform sound measurements. You will be prompted to grant permission upon first use, and this can be managed in your iOS settings.

### How accurate is Sound Level Analyzer?

The app provides sound level measurements with options for frequency and time weighting (A, C, Z, Fast, Slow) and includes calibration features for level correction. Accuracy depends on the device's microphone and environmental conditions.

### Can I save my measurements with Sound Level Analyzer?

Yes, Sound Level Analyzer allows you to save measurement displays with a time stamp using the Snapshot feature. This data is saved to your device's Photos library.

### What platforms is Sound Level Analyzer available on?

Sound Level Analyzer is currently available for iPhone. It is designed for iOS devices and supports various iPhone models.

### How often is Sound Level Analyzer updated?

The latest version of Sound Level Analyzer is 9.0, last updated on January 12, 2026. While the provided data indicates a future update date, typical app updates occur periodically to introduce new features and improve performance.

### What is the price of Sound Level Analyzer?

Sound Level Analyzer is a paid application priced at $6.99. There are no in-app purchases or subscriptions required to access its full functionality.

## Version history (last 5 releases)

### 9.1 — 2026-07-26

- Improved internal processing and performance.

### 9.0 — 2026-01-12

- Improved internal processing and performance.
- Requires iOS 26.2 or later.

### 8.0 — 2024-12-01

- Renewed UI design.
- Requires iOS 18.1 or later.

### 7.0 — 2023-09-30

- Improved internal processing and performance.
- Changed the display position of the occurrence time and the maximum level in "Display Max" at P.S. mode.
- Requires iOS 16.6 or later.

### 6.0 — 2022-10-05

- Improved internal processing and performance.
- Renewed UI design.
- Requires iOS 15.0 or later.

## Apps similar to Sound Level Analyzer

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Noise Guru: Decibel Meter](https://appshunter.io/ios/app/noise-guru-decibel-meter/id6444836813) | 4.6 (299) | Free | Utilities |
| [Decibel X PRO: dBA Noise Meter](https://appshunter.io/ios/app/decibel-x-pro-dba-noise-meter/id1257651611) | 4.7 (6,888) | $69.99 | Utilities |
| [Decibel X:dB Sound Level Meter](https://appshunter.io/ios/app/decibel-xdb-sound-level-meter/id448155923) | 4.6 (160,618) | Free | Utilities |
| [Decibel : dB sound level meter](https://appshunter.io/ios/app/decibel-db-sound-level-meter/id1227650795) | 4.6 (36,118) | Free | Utilities |
| [Decibel Meter - Sound Analyzer](https://appshunter.io/ios/app/decibel-meter-sound-analyzer/id1579747105) | 3.5 (54) | Free | Utilities |
| [dB Meter & Spectrum Analyzer](https://appshunter.io/ios/app/db-meter-and-spectrum-analyzer/id733773616) | 4.7 (865) | $29.99 | Utilities |

## More apps by TOON,LLC

- [Audio Tone Generator Lite](https://appshunter.io/ios/app/audio-tone-generator-lite/id633948720)
- [Audio Frequency Analyzer](https://appshunter.io/ios/app/audio-frequency-analyzer/id684641742)
- [Sound Level Analyzer Lite](https://appshunter.io/ios/app/sound-level-analyzer-lite/id886090835)
- [Hearing Analyzer Portrait](https://appshunter.io/ios/app/hearing-analyzer-portrait/id922806926)
- [Hearing Analyzer Lite](https://appshunter.io/ios/app/hearing-analyzer-lite/id922827806)

All apps by TOON,LLC: https://appshunter.io/developer/633948723

## Related topics

[sound level analyzer](https://appshunter.io/ios/topics/sound-level-analyzer)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-22.*