AudioTool

SPL meter with graph view and pink noise generator

AudioTool centers on one job and does it well: measuring sound pressure levels and showing the results on a graph. It listens through your device’s microphone, turns the captured sound waves into an electronic signal, then plots the decibel values so you can see peaks and overall levels at a glance.

Getting started is straightforward. Connect your device to an audio source such as a loudspeaker or a pair of headphones, open the app, and it begins reading sound level in decibels automatically. The graph gives you a visual timeline of what the microphone detects, which is helpful for quick checks or comparing different volume settings.

Two practical options round out the toolkit. Single-clap mode lets you trigger a measurement with a sharp clap, making it simple to capture a brief impulse without fiddling with controls. There is also a pink noise generator. Pink noise contains random frequencies distributed in a way many users find useful as a neutral background, and it can serve as a steady sound bed that some people use to help with sleep.

AudioTool’s appeal lies in its focused feature set. You get SPL metering and a graph for visualization, plus the convenience of clap-triggered capture and a built-in pink noise source. It is a purposeful utility for anyone who wants to observe sound levels and have a consistent noise reference on hand. If you are looking for a broad studio suite with many extras, this stays closer to the essentials, prioritizing clear measurement and simple, direct options over an expansive tool list.