# Decibel - dB Sound Level Meter — Hertz, Audio Spectrum Analyzer

> Professional sound level meter and hearing test tool for iOS devices. (iPhone/iPad app by Kemal Bakacak.)

- Source: https://appshunter.io/ios/app/decibel-db-sound-level-meter/id6443760208 (this page in markdown: same URL + `.md`)
- Developer: [Kemal Bakacak](https://appshunter.io/developer/1475963902)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 4.60/5 from 36 App Store ratings · 6 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 18 MB
- Languages: German (Germany), Arabic, American English, French (France), Hindi, Italian, Japanese, Korean, Dutch, Brazilian Portuguese and 7 more
- Released: 2022-10-31
- Data updated: 2026-08-26
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/decibel-db-sound-level-meter/id6443760208/reviews.md

## What is Decibel?

This app turns your iOS device into a professional sound level meter. You can detect harmful environmental noises, and helps protect your hearing and health. You can save this measurement and check values if you need anytime. Also, you can check your stereo and bass sound to your phone. Your phone stereo is important but more important your hearing performance. You can test and track your hearing performance. Also, you can keep history for your hearing performance.

Features,
- Trusted accuracy: The app is tested and pre calibrated for all Apple devices. The precision is matching with real SPL devices.
- Powerful, smart history data management.
- Recording data can be saved into a list of history records for future access and analysis.
- Easily tseting your phone stereo and bass performance.
- Generate high frequency sound up to 20.000 Hertz.
- Take hearing test in 2-3 minutes.
- Get instant results from hearing test.
- No need to internet connection for using this application.
- Dark mode support.

Hearing Testing,
- Will help you find out how well you hear
Before the Start,
- Find a quiet place to get most accurate results
- Connect headphones to your device because test will measure your each ears
- Set the volume of your device %50 sound level to get most accurate result

Testing process,
We will send generated sound to your each ear. This sounds are have different Hertz and Decibel. You will listen 4 different Hertz level and 4 Decibel level. Hertz values are increased and decibel values are decreased. Hertz values are 500, 1000, 2000, 4000. Decibel values are 60, 40, 25, 10. You will start 500 Hertz and 60 Decibel and then you will hear 500 Hertz and 45 Decibel. When decibel values are completed, Hertz level are increased and continue with 1000 Hertz and 60 Decibel. You will hear 16 different sound in each ear. It's very easy process for you. All of this takes only 2-3 minute.

If you have any questions, please do not hesitate to contact us, support@kemalbakacak.com

Subscription and Pricing:
If you choose to purchase, payment will be charged to your iTunes account, and your account will be charged for renewal within 24-hours prior to the end of the current period. Auto-renewal may be turned off at any time by going to your settings in the iTunes Store after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable

Current subscription starts from $2.49 USD/month.

Subscriptions can be deactivated at the following link: https://support.apple.com/en-us/HT202039
Privacy Policy: https://kemalbakacak.com/agreements/decibel-sound-level-meter/privacy_policy.html
Terms of Use: https://kemalbakacak.com/agreements/decibel-sound-level-meter/terms_and_conditions.html

## Key features

- Professional sound level meter
- Hearing performance testing
- Stereo and bass sound testing
- High frequency sound generation
- Accurate measurements
- History data management
- Dark mode support

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly - Noise Dosimeter | $2.49 | per month |
| Yearly - SPL & Decibel Meter | $9.99 | per year |
| Yearly Trial - Water Eject | $9.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime - Hz Tone Generator | $15.99 | one-time |


## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/decibel-db-sound-level-meter/id6443760208/reviews.md

### 1/5 — 听力测试声音太大

*2026-01-20*

这个听力测试一上来声音开这么大差点把我震聋了，气死

**Developer response:** 您好，非常感谢您的评价。音量级别应当可以从高到低进行调节。考虑到每个人的听力情况不同，覆盖所有用户非常重要。我会研究如何通过更友好的用户界面来解决您提出的问题。再次感谢您，祝您有美好的一天。

### 3/5 — 感受

*2025-08-25*

初次运行立体声，音调，会卡着动不了。试用，这个功能这么简单，和收费价格严重不配

**Developer response:** 你好，非常感谢你的评价。我在我的几台设备上没有复现你的问题，但我会继续调查。目前我没有从那边收到其他反馈，所以这可能是一次性的情况。方便的时候能否请你再试一次？我的套餐包含所有付费功能，你将能够使用所有这些功能。所以价格并不仅仅是针对这一项功能。我认为这是合理的，但我也会进行比较。再次感谢你，祝你有美好的一天。

### 1/5 — 上来就要钱啊？

*2025-06-25*

还没试用，直接收费，很久没遇到这样的app了

**Developer response:** 你好，非常感谢你的评价。你可以免费尝试每个功能，但会有一些限制。有些功能（例如分贝计）会每天补充。我不想强迫用户付费。再次感谢，祝你有美好的一天。

### 3/5 — 糟糕的本地化翻译出来

*2025-06-18*

这款软件本地化翻译做的很不好，在立体声测试环节中，竟然把“右侧”翻译为“正确的”，即便这两个意思是同一个单词。

**Developer response:** 您好，非常感谢您的反馈。我已经更新了部分语言的本地化内容，并将尽快完成所有语言的更新。我相信这将带来改进。再次感谢您，祝您一天愉快。

### 1/5 — 无语

*2024-10-04*

给我测1000赫兹声音，这不是扯

**Developer response:** 您好，非常感谢您的评论。我们无法理解您的问题。能否请您提供更多信息？我们相信我们会尽快解决您的问题。再次感谢您，祝您愉快。

### 1/5 — Free???

*2023-06-23*

Says free with in-app purchases… makes you sign up for subscription before you can use it 🤷🏻‍♂️

**Developer response:** Hello, you don't need to subscribe or any payment before the using app. You can use all of the features without any payments, but you have to daily limit for using these features. We don't like to force user to any payment. All of these limits are comptely user friendly.

## Frequently asked questions about Decibel

### Does Decibel have ads?

Yes, Decibel contains advertisements. As a free application with in-app purchases, advertisements are displayed to support its continued development and availability.

### What is the subscription cost for Decibel?

The current subscription for Decibel starts at $2.49 USD per month for the Noise Dosimeter feature. Other plans include a yearly option for SPL & Decibel Meter at $9.99/year, which includes a 3-day free trial.

### How accurate is Decibel as a sound level meter?

Decibel is tested and pre-calibrated for all Apple devices, matching the precision of real SPL devices. It is designed to provide trusted accuracy for environmental noise detection.

### How long does the hearing test in Decibel take?

The hearing test within Decibel is designed to be quick, taking only 2-3 minutes to complete. You will receive instant results after the test.

### Can I use Decibel offline?

Yes, there is no need for an internet connection to use the core functionalities of Decibel, including its sound level meter and hearing test features.

### What devices is Decibel compatible with?

Decibel is compatible with iPhone, iPad, and iPod devices. It is rated for ages 4 and up.

### How often is Decibel updated?

The latest version of Decibel is 1.49.0, last updated on March 18, 2026. This indicates a history of regular updates to improve functionality and reliability.

### What is the user sentiment for Decibel?

Decibel has a high user rating of 4.7 stars from 35 ratings, suggesting positive user sentiment regarding its features and performance.

## Version history (last 5 releases)

### 1.52.0 — 2026-08-18

Thank you for using Decibel - dB Sound Level Meter. In this version,

- Made localization improvements.

Thank you for your continued support!

### 1.51.0 — 2026-06-22

Thank you for using Decibel - dB Sound Level Meter. In this version,

- Refined the design to improve overall quality and consistency.

Thank you for your continued support!

### 1.50.0 — 2026-05-07

Thank you for using Decibel - dB Sound Level Meter. In this version,

- Refined the design to improve overall quality and consistency.

Thank you for your continued support!

### 1.49.0 — 2026-03-18

Thank you for using Decibel - dB Sound Level Meter. In this version,

- Refined the design to improve overall quality and consistency.

Thank you for your continued support!

### 1.48.0 — 2026-02-10

Thank you for using Decibel - dB Sound Level Meter. In this version,

- Refined the design to improve overall quality and consistency.

Thank you for your continued support!

## Apps similar to Decibel

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [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 |
| [Noise Guru: Decibel Meter](https://appshunter.io/ios/app/noise-guru-decibel-meter/id6444836813) | 4.6 (299) | Free | Utilities |
| [dB Meter & Spectrum Analyzer](https://appshunter.io/ios/app/db-meter-and-spectrum-analyzer/id733773616) | 4.7 (865) | $29.99 | 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 Meter - Sound Analyzer](https://appshunter.io/ios/app/decibel-meter-sound-analyzer/id1579747105) | 3.5 (54) | Free | Utilities |

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All apps by Kemal Bakacak: https://appshunter.io/developer/1475963902

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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 2026-08-26.*