# Decibels: Sound Level dB Meter — Sound exposure level db meter

> Mobile decibel meter for measuring environmental sound levels and noise pollution. (iPhone/iPad app by Real Vision Ltd.)

- Source: https://appshunter.io/ios/app/decibels-sound-level-db-meter/id1590741461 (this page in markdown: same URL + `.md`)
- Developer: [Real Vision Ltd](https://appshunter.io/developer/1447773149)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 4.30/5 from 22 App Store ratings · 9 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 27 MB
- Languages: American English
- Released: 2021-11-01
- Data updated: 2026-08-17
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/decibels-sound-level-db-meter/id1590741461/reviews.md

## What is Decibels?

Do you want to measure sound level? This is a smart sound level meter app for iPhone!
Our decibel meter uses your built-in microphone to measure sound volume in decibels (dB) and also displays samples on graph.
Sound Meter work efficiently to find the level of environmental noise including acoustic. Sound Detector is known as SPL Meter or Decibel Meter (dB Meter). Through Sound Detector or Noise Detector you can easily detect too much loud or too much low sound in order to prevent your hearing functionality.

dB Meter is a full of features dBA sound level meter (noise meter) with exclusive accuracy of sound frequency measurements calibrated with a professional decibel meter.
Sound meter is an indispensable tool for your daily life, no matter what you do, where you stay, it is a practical noise detector to help you avoid noise pollution that harms your hearing and affect your rest. Our sound meter app can provide accurate decibel data and show you how the decibel goes.
A sound level meter (known as a noise detector) is useful for those who wants to avoid exposing their ears to harmful noise levels. But who wants to spend hundreds of dollars on one? So, use this dBA noise meter for your benefit.

Microphones in IOS devices are made to record human voice, therefore the maximum noise is limited and very loud sounds cannot be recognized (in most cases above 100dB). Decibels: Sound Level dB Meter is calibrated to be accurate in +-2.5 dB range of actual noise level and is probably by far the most accurate sound meter on App Store. We have adjusted Decibels: Sound Level dB Meter with the use of professional sound meter used by sound engineers and made required adjustments for many IOS devices, including the most popular devices on the market today.

Features:
- Indicates decibel by gauge
- Display the current noise reference
- Display min/avg/max decibel values
- Display Elapsed time of decibel 
- Show the reference value for each type of environment as the sound level we are measuring.
- Save data & View history.
- Can calibrate the decibel for each devices

Levels of Noise In decibels (dB) according to American Academy of Audiology (www.audiology.org):
140 dB - Gun shots, fireworks
130 dB - Jackhammers, Ambulance
120 dB - Jet planes taking off
110 dB - Concerts, Car horns
100 dB - Snowmobiles
90 dB - Power tools
80 dB - Alarm clocks
70 dB - Traffic, vacuums
60 dB - Normal conversation
50 dB - Moderate rainfall
40 dB - Quiet library

Sound Level Meter (SPL Meter) also called frequency meter. Too noisy sound is harmful to your physical health and to your hearing functionality. Protect your family health by detecting db value now by using noise meter or decibel meter or to measure any kind of environmental noise (noise measurement). 
As we know that too much environmental noise or loud sound is very hazardous for both human physical and mental health. Noise Meter or Sound Detector will help you to detect too much loud sound and alert you to take care of your physical and mental health

Information about the auto-renewable subscription:

Subscription name: Unlock Premium
Subscription price: 3 days free, then $3.99/week
Auto-renew: This is an auto-renewing subscription, read below to know more.

– Payment will be charged to iTunes Account at confirmation of purchase
– Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period
– Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal
– Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase
- Our Terms of Service: https://realvision.app/terms-and-privacy/
– Our Privacy Policy: https://realvision.app/privacy-policy/
– Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable

## Key features

- Measures sound in decibels (dB)
- Displays sound samples on a graph
- Detects loud and low environmental noise
- Calibrated for accuracy
- Shows min/avg/max decibel values
- Saves data and view history
- Calibrates decibel for each device

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| dB Meter Full App Access | $3.99 | per month |


## Recent user reviews (9 of 9)

All indexed reviews: https://appshunter.io/ios/app/decibels-sound-level-db-meter/id1590741461/reviews.md

### 1/5 — Cobrança indevida

*2026-03-13, version 1.4*

NÃO BAIXEM ESTE APP. Havia uma mensagem de período de teste por 3 dias e cobraram na hora. Quero meu dinheiro de volta.

### 3/5 — Como eu cancelo os 3 meses?

*2025-10-16, version 1.0*

Não posso pagar

### 2/5 — 3 jours d’essai inexistant …

*2025-08-13, version 1.0*

Attention car vous payer l’abonnement d’un mois dès l’installation alors que l’éditeur précise 3 days free ! A vous de voir …
On ne sait pas si la mesure se fait suivant la norme dB(A) dans l’app non plus (à moins de payer plus encore ?)

### 2/5 — Db

*2025-03-10, version 1.0*

Çok kullanışlı değil ama idare eder.

### 1/5 — Cobrança indevida

*2024-05-19, version 1.0*

Nas primeiras horas já cobram pelo aplicativo.

### 1/5 — Fake free trial

*2024-01-07, version 1.0*

Fake as f***, your card will be immediately charges upon the 3-free trial starts.

### 1/5 — Arnaque

*2022-11-12, version 1.0*

Je voulais faire un test avant de l’acheter et bien le logiciel a commencer par prélever une mensualité sur ma CB. Pourtant je fais toujours très attention avant de faire un règlement. Je suis en colère et même si ce logiciel fonctionne bien je ne le retiendrai pas pour cette raison.

### 4/5 — Avis sur cette fabuleuse application

*2022-03-23, version 1.0*

Premièrement, je tiens a mettre en lumière le caractère utile et très pratique de cette application. Les mesure sont des plus précis et des plus stables ce qui les rend utile pour des calculs précis. Cette application est ce que la baleine est a l’océan! C’est un géant !

### 5/5 — Toprak’tan Gelen Güç

*2022-01-22, version 1.0*

Öz Erenler Arsa Ofisi

## Frequently asked questions about Decibels

### What is Decibels used for?

Decibels is used to measure sound levels in decibels (dB) using your iPhone's microphone. It helps you detect environmental noise pollution and understand sound exposure to protect your hearing.

### How accurate is Decibels?

Decibels is calibrated to be accurate within a +-2.5 dB range of the actual noise level. The developers have adjusted it using professional sound meters and for many iOS devices.

### Can Decibels measure very loud sounds?

Microphones on iOS devices are primarily made for voice recording, which limits the maximum noise they can recognize, often above 100dB. While Decibels aims for accuracy, extremely loud sounds might not be fully captured.

### Does Decibels have ads?

No, Decibels does not contain advertisements. It is a free app with optional in-app purchases for full access.

### What are the subscription options for Decibels?

Decibels offers 'dB Meter Full App Access' for a monthly subscription of $3.99, providing complete functionality.

### What devices does Decibels support?

Decibels is available for iPhone and iPod devices. It is designed to work efficiently on these platforms.

### How often is Decibels updated?

The latest version of Decibels is 1.4, and it was last updated on October 16, 2025. Updates typically include improvements and new features.

### What is the age rating for Decibels?

Decibels has an age rating of 4+, making it suitable for a wide range of users interested in sound measurement.

## Version history (last 2 releases)

### 1.4 — 2025-10-16

Performance improvement

### 1.0 — 2021-11-01

No release notes.

## Apps similar to Decibels

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Decibel Metre (Sound Meter)](https://appshunter.io/ios/app/decibel-metre-sound-meter/id1590659820) | 4.5 (577) | Free | Utilities |
| [Decibel : dB Noise Level Meter](https://appshunter.io/ios/app/decibel-db-noise-level-meter/id6464403884) | 4.4 (250) | Free | Utilities |
| [Decibel X:dB Sound Level Meter](https://appshunter.io/ios/app/decibel-xdb-sound-level-meter/id448155923) | 4.6 (160,618) | Free | Utilities |
| [NIOSH Sound Level Meter](https://appshunter.io/ios/app/niosh-sound-level-meter/id1096545820) | 4.7 (16,565) | Free | Utilities |
| [Decibel Meter - Sound Level dB](https://appshunter.io/ios/app/decibel-meter-sound-level-db/id1624503658) | 4.7 (1,292) | Free | Utilities |
| [Sound Meter (Decibel)](https://appshunter.io/ios/app/sound-meter-decibel/id1626613141) | 4.5 (3,079) | Free | Utilities |

## More apps by Real Vision Ltd

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- [Background Remover.](https://appshunter.io/ios/app/background-remover/id1581447015)

All apps by Real Vision Ltd: https://appshunter.io/developer/1447773149

## Related topics

[db meter lite](https://appshunter.io/ios/topics/db-meter-lite)

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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 2026-08-17.*