dB Decibel Meter PRO

Waste of money. It will not work at all

I bought this by mistake and so was able to compare it with not only the National Institutes of Health guidelines but also another app. Not only does it function poorly, it's grossly inaccurate. Do not buy!

Although the advertisement says calibrated with high accuracy meter, this app seems to read 10db less than other apps. Also, no designation whether or not how the measurement is weighted. Most apps have a calibration feature to match the apps reading to another standard ( due to variations in microphone , pick up through various cases etc.). Could be nice but no cigar.

Other than the fact that there is no definition of the terms used (peak, max) or explanation of how they weight the acoustic spectrum as sensed by the iPhone microphone in calculating a sound pressure level, I find it to be an easy to use app for comparing different ambient environments. The accuracy seems to be good and the repeatability excellent. The UI is fairly obvious. I am not sure how they achieve the apparent dynamic range when they are stuck with the limitations of the iPhone sensor.

don't expect your watch to measure noise, it still needs to be done by opening the app on your iPhone, the watch only shows what you see on your iPhone. That is not what I expect.

I bought this as a backup to my existing Extech sound meter and it turns out that the results are very if not completely similar. The UI is great with a very flat and clean look and is just pleasing to work with. Highly recommend this app if you're looking for a decibel level meter !

Runs about 10db low in comparison with my pro sound meter set at A weighting. Use the app for fun don't trust it for accurate readings.

A great app! You can use to measure the sound levels emitted correctly. User-friendly interface and easy to use. You can turn your iDevice into a sound measurement tools to use in their work as well as play games to relax with friends! Shout with your friends and see who has the biggest sound.

I use this app to check out the dB around me. Sound pollution is an important fact which we should pay more attention to. This app works well and the results are accurate.

I tested most meters against my dedicated hardware meter and all sucked, very pool- this is very closely calibrated and actually worth using. Great.