Turn your iPhone into a sound level meter to measure ambient noise — 2022

The sounds can become really annoying if it's really loud. In order to measure this intensity, you need to have a sound level meter that performs the measurement in dBA. But this can be replaced by an application found in the App Store to turn your iPhone into a sound level meter. In this article we show you the best options available.

What you should look for in these applications

If you are looking for a sound level meter, you must undoubtedly live in a fairly noisy environment and you want to have evidence to prove that it is so. Although it may also be that you want to have fun and are curious if putting music in your room reaches a dangerous noise limit. In these cases you should use applications that are above all precise. You have to look especially for those that are pre-calibrated in order to have greater precision. It may also be the case that you have to perform a calibration as soon as you open the application to have access to a much more accurate measurement.

The esthetic is also quite important. In a sound level meter, obviously the most important thing is the amount of dBA that is detected. This should be the absolute protagonist in this regard and is what to look for. The aesthetics in an application is a really important section and it must above all be clear. Many of these can provide a lot of information that is not useful to your case. In many cases those that are basic are the most useful since it is limited to something very specific that you need and that's it.

totally free apps

When you are going to download applications, you always look for the cheapest option. Below we show you options of this style, in which there is no type of microtransaction.

Sonómetro – Sound Meter

sound level meter

This application has an extremely simple design to be able to show all the sound data that exists in the surroundings of the iPhone. It is really easy to use since you only have to start it to be able to give the necessary permissions and know the amount of dB around you. In the application itself, a small graph is included under the main indicator where you can see the variation in this sense of all the sound records.

In addition, it also integrates a history with all the records that have been made since you installed it. If you don't know much about healthy limits, the app will help you a lot. It has a series of established parameters in which it registers, depending on the intensity of dB, the noise levels that exist. For example, with 120 dB it gives you the data that it is an unbearable noise.

Sonómetro - Sound Meter Sonómetro - Sound Meter Descargar QR-Code Sonómetro - Sound Meter Developer: GWI JU JO

dBMeter – Sonometro


dBMeter is a free app to measure decibels. Start measuring the noise level by simply pressing a button. dBMeter allows you to save the results in decibels in a comma-separated file (csv) for later analysis with excel. You can also share these files via email, text messages, whatsapp, etc... This is ideal when you are working and the neighbors are bothering you or you don't know if you study in a suitable environment.

Keep in mind that since the microphone of each smartphone has different capabilities, it is recommended to use the calibration option to obtain more reliable results. This is a process that is carried out at the beginning once the necessary permissions have been given to the application to start working correctly. This will make the results much more accurate.

dBMeter - Sonometro dBMeter - Sonometro Descargar QR-Code dBMeter - Sonometro Developer: Ramon Palacios Saez

NIOSH Sound Level Meter


This award-winning app combines the best features of professional sound level meters and noise dosimeters in one simple, easy-to-use package. It has been developed by experienced acoustic engineers and hearing loss experts. This makes it much more important since you can trust all the code they have used to program it.

It has been tested and validated to an accuracy of 2 dBA in accordance with laboratory standards. It's completely free with no ads or limited features and no in-app purchases. Provides the most relevant metrics found in professional sounding instruments today. Averages such as LAeq and TWA, maximum and peak levels, noise dose and projected dose.

NIOSH Sound Level Meter NIOSH Sound Level Meter Descargar QR-Code NIOSH Sound Level Meter Developer: EA LAB

Sonic Tools SVM


This application combines a sound, vibration and magnetic field analyzer. In the field of vision, it can be observed beyond the typical number that gives us the exact data of dBA or another, a spectrogram. All this scheme can be consulted freely by zooming in or out to see exactly the data you want to consult. Here we also see that there is a small variation when it comes to precision.

It is important to note that this app has an audio signal oscillation function, and depending on the operation, it may generate a sound that is harmful to the human body, so please refrain from using such things as headphones or earphones. That is why you have to be very careful since to have all this data it is necessary for the iPhone to make sounds if you are going to use this type of function.

Sonic Tools SVM Sonic Tools SVM Descargar QR-Code Sonic Tools SVM Developer: Rikki Systems Inc.

Options with microtransactions

In the App Store you can find options that are free at first but are limited. In this case, micro payments must be made in order to unlock all the features, and in this case we show you the best options.

Soundmeter Pro


Decibel Meter Pro has a variety of features that give the sound level meter unique precision and additionally comes with a built-in spectrum analyzer. The app has been calibrated with a professional dB meter. dB Meter is a free application that provides professional-quality measurements, thanks to the fact that it has been calibrated using a Nor140, a high-precision sound level meter.

You can measure ambient noise levels, save your measurements and your location, and share them with friends. dBMeter blends utility with elegant design and a fresh user experience to deliver a powerful tool with a great look, and at a small fraction of the cost of professional sound level meters. In addition, in its latest versions it has also been made compatible with AirPods to be able to carry out measurements with them.

Soundmeter Pro Soundmeter Pro Descargar QR-Code Soundmeter Pro Developer: Vlad Polyanskiy

Decibel X


Decibel X is one of the few noise/sound measurement apps on the market that offers pre-calibrated and highly reliable measurements. In the end, you'll be turning your iOS device into a professional sound or noise meter that accurately determines everything that happens around you. Although, it must be taken into account that in a totally silent room it will not mark 0 dB but that the range will always be from 30 to 130 dBA.

The interface that is used is quite beautiful so that when using it it is not annoying at all. It integrates with the iOS Health application to be able to export all the noise levels directly. It has been tested and calibrated for most Apple devices, although it is always recommended to perform a calibration to suit the personal situation of each device.

Decibel X - dBA Sound level meter Decibel X - dBA Sound level meter Descargar QR-Code Decibel X - dBA Sound level meter Developer: SkyPaw Co. Ltd

Sound Level Meter – Decibel Meter

sound level meter

This app turns your iOS device into a professional sound level meter, detects harmful environmental noise and helps protect your hearing and health. It has highly reliable pre-calibrated measurements and is dBA and dBC compatible. This means that quite precise measurements can be made in order to have much clearer information about everything that happens around you, and it will also provide fun.

This application will make you doubt the amount of noise in a room as a whole. The interface is quite adequate since just by entering you can access the measurement with a graph of all its evolution over time. You do not need to do practically anything except the initial calibration and in the event that you see any strange value, do it again.

Sound Level Meter - Decibel Meter Sound Level Meter - Decibel Meter Descargar QR-Code Sound Level Meter - Decibel Meter Developer: O2 Apps OU



Every day we encounter a lot of noise, long-term exposure can lead to hearing loss. The developers have created this app so that you can avoid exposing your ears to harmful noise levels and you don't have to buy a separate meter. It will simply use the microphone of your iPhone to be able to take the necessary measurements.

You can use it to measure ambient noise, save your measurements and share your measurements with other users. Furthermore, the noise meter combines its usefulness with a modern design and a polished user interface. It is compatible with the company's headphones, to be able to know how much noise is coming out of them in order to avoid problems when listening to music, for example.

dBNoise: decibel meter dBNoise: decibel meter Descargar QR-Code dBNoise: decibel meter Developer: Aliaksei Kimbar

Which one do we recommend?

There are many options that we have reflected in this article, but without a doubt you have to keep one of them in particular. One of them is that of NIOSH which is one of the best rated in the App Store and has the approval of experts in the field. Numerous engineers have come together to have a suitable tool to be able to measure decibels. It also has a very nice and clear aesthetic in which to consult different data.

Another great option that can be found is Soundmeter Pro despite having an integrated purchase, it is really powerful. Turn your iPhone into a real sound level meter with a modern and visually attractive aesthetic. It requires an initial calibration and offers fairly accurate results. In addition, all the data that is going to be collected is stored so that you can consult it at any time.