Sound meter is a free app that measures the sound pressure level (SPL) in decibels (dB) , it allows you to easily measure the noise level in your environment. Whether in a noisy workplace, a construction site, or a public area, Sound Meter will help you determine whether the noise level is safe for your hearing. Moreover, this app combines sound meter and SPL camera function, so you can record your measurements in video and take photos, which are easily shareable. Sound Meter Camera is easy