Contact NIOSH Sound Level Meter Support

I have tried now on multiple separate phones with the software freshly installed. I cannot get the program to recognize any external mics I plug-in to have better accuracy than the in accurate internal mic. I would like to put a mic and they can actually placed on a calibrator. I’ve sent a message to the Company that has developed the software and I will be looking forward to hearing back how one can properly connect an external microphone to the software. It is completely ineffective to use the internal Apple microphone so that is no option at all for any real use of this software.

I can’t tell what the play or pause does as when I click on either one, the noise measurement continues to respond. Then, sometimes the app would freeze and not record any measurements whether I clicked on play or pause. I also gotten situations were the app is responding to sound and updating the metrics in the stat below but the main display where it displays the instantaneously levels just shows —.

I was using it to try out the free version and when I installed it and opened the app for the first time; it showed me readings that were very untrue like 120dB. I know this isn’t right because I was lying in my bed with no electronics on next to me or anything loud at all. I don’t know what the problem is since there’s so many positive comments but it no work :( EDIT: I thought there could be a free version and a paid version but I guess I was wrong. This review is not for a different app by the way, it was just what the app was showing me. But I do not have a professional microphone attached to my iPad so if you want to say it was that I guess it could be 🤔 yet I doubt it. I will change my review to 4 stars because I am only testing this against 3 other decibal meters and not a profesional machine or a sound that is supposed to be at a specific level.