> Sound Meter

Not sure what you're using this for, or which exact app it is, but I use the app put out by the National Institute for Occupational Safety and Health (NIOSH) for this, NIOSH Sound Level Meter[1].

I use Network Ping Lite[2] often to just check if the network I'm on is stable/up.

[1] https://www.cdc.gov/niosh/topics/noise/app.html

[2] https://apps.apple.com/us/app/network-ping-lite/id289967115