# Sound Detector — Detect decibel and frequency

> Measures sound decibels and frequency with recording and playback features. (iPhone/iPad app by Rui Cao.)

- Source: https://appshunter.io/ios/app/sound-detector/id1468191026 (this page in markdown: same URL + `.md`)
- Developer: [Rui Cao](https://appshunter.io/developer/1468033329)
- Category: Utilities
- Price: Free
- Rating: 3.00/5 from 5 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.0 · 5 MB
- Languages: English, Chinese
- Released: 2019-06-19
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/sound-detector/id1468191026/reviews.md

## What is Sound Detector?

Sound Detector is a simple application for measuring volume in decibels(dB) and frequency(Hz).

- Fully Retina-compatible with all screen size
- User recording audio files could be shared and support audio playback

Key Features

• 0.1s detecting time interval
   ○ Roughly providing continuous data to display the details of volume in any environment.

• Replay recording sound file
   ○ Audio file can be replayed without any limitation until it is covered by starting a new recording.

• Acquire recording audio file
  ○ Audio files can be shared to the user. 

• Simple sound value stats
  ○ A simple stats shows maximum, minimum and average decibel and frequency values

• Pure user interface 
  ○ A completely free application without no ads. Very easy to use.

Please feel free to leave reviews and rate this app. Feedback helps this app become better!

## Key features

- Measures decibels (dB) and frequency (Hz)
- 0.1s detecting time interval
- Record and replay audio files
- Share audio recordings
- Display max, min, and average sound stats
- Simple and free user interface

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/sound-detector/id1468191026/reviews.md

### 1/5 — Terribly inaccurate

*2021-03-09, version 1.0.5*

It couldn’t even latch onto an A440 pitch pipe.

### 1/5 — Terrible

*2020-01-26, version 1.0.5*

As a singer testing this out it is extremely off. Doing a low b flat 4 it was going to the 300s when it should only be at about 74 in Hz.

## Frequently asked questions about Sound Detector

### What is Sound Detector's primary function?

Sound Detector is a utility app designed to measure sound volume in decibels (dB) and frequency in Hertz (Hz). It provides continuous data and allows users to record and replay audio files.

### Does Sound Detector have ads?

No, Sound Detector is a completely free application without any advertisements. The developer has indicated it is ad-free.

### What kind of statistics does Sound Detector provide?

Sound Detector offers simple statistics for sound measurements, including the maximum, minimum, and average decibel and frequency values detected.

### Can I save and share recordings with Sound Detector?

Yes, users can record audio files and share them with others. The app also supports replaying these recorded sound files without limitation.

### On which devices can I use Sound Detector?

Sound Detector is compatible with iPhone, iPad, and iPod devices. It is fully Retina-compatible with all screen sizes.

### How often is Sound Detector updated?

The latest version of Sound Detector is 1.2.0, which was last updated on March 2, 2023. This indicates a relatively infrequent update cycle.

### What is the age rating for Sound Detector?

Sound Detector has an age rating of 4+, making it suitable for young children and general audiences.

### What is the user feedback on Sound Detector?

Sound Detector has a rating of 3.0 stars from 5 ratings. Users are encouraged to leave reviews and feedback to help improve the application.

## Version history (last 2 releases)

### 1.2.0 — 2023-03-02

1. General bug fixes 
2. Stats Records

### 1.1.0 — 2023-02-22

1. New UI design
2. General bug fixes

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## More apps by Rui Cao

- [Aussie Data Helper](https://appshunter.io/ios/app/aussie-data-helper/id1470895564)

All apps by Rui Cao: https://appshunter.io/developer/1468033329

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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 2026-06-10.*