Bad
It is trash
不准
差太多了 毫无参考性
Great!
Usefull & accurate
Nota mil!
Muito bommmm
Pretty good
Pretty damned good for what I need, it’d be handy if it had a report generator that saved a PDF report so that it could be used as evidence for noisy areas!

Transform your device into a professional sound meter to accurately measure ambient noise levels. Understand how loud your surroundings are, from quiet rooms to loud events, and learn about potential hearing risks.
Summarized from real user reviews of Decibel. Based on 470 reviews and a 3.6/5 average, it highlights the 4 positives and 4 negatives reviewers mention most about this Utilities app.
7.0
January 23, 2025
Updated for iOS18
3 issues
App shows high decibel readings even in silent environments
Microphone issues causing inaccurate measurements
4 requests
Ability to calibrate the app
Option to record and save measurement history
This app turns your iPhone, iPad, or iPod touch into a professional and accurate sound meter. It precisely measures the sound pressure level all around you, allowing you to understand how loud your environment is in decibels.
The app accurately measures sound pressure levels in decibels (dB). It provides real-time readings, helping users understand ambient noise intensity and identify potential hearing hazards in various environments.
Yes, this tool is absolutely free. There are no costs associated with downloading or using its features for measuring sound pressure levels.
The app is designed to work on iPhone, iPad, and iPod touch devices, transforming them into accurate sound meters.
You can use this app to measure the quietness of your room, the loudness of events like concerts or sports, or to monitor noise levels in workplaces. It's also useful for understanding potential hearing damage risks from prolonged exposure to high decibel levels.