Vibration analysis

I’ve been trying to find an app that measures vibration in mm/s. This might be that app (I don’t know yet), but whenever I launch it, the app takes over the entire screen of my iPhone, and it’s impossible to swipe away or quit. I’ve tried to do measurements, but it asks for money before I can try, and because of how it blankets over my iPhone screen and won’t quit when I want to exit, I’m hesitant to make any payments.

No other app that I’ve found comes close to the advanced capabilities of this app. It’s more than I need, but other apps don’t use the full capabilities of the accelerometer in a modern phone. This one does.

I use to live in a house with two apts, the neighbor started a small laundry biz, so washer and dryer during the activity, vibrate and resonance is what the vibration through walls and floor transform in sound, LFE from 1 Hz til 10/12 Hz. Those Hz incapsulate in +45 dbA are the reason of my discomfort or better, pain. Regular people usually don’t care about it is a kind of low sound, but me, I have this issue with LFE, for me is like to live in a disco, so download this and others app to evaluate the amount of vibes and their power, if you move from 1 Hz to 400 Hz keeping the same peak volume then people understand my pain. Police officer said I can’t hear anything. When I moved from 1 Hz to 600 Hz he said thst is disturbance. Asking him on what base is disturbance? On volume or power of impact? He said volume and I showed him that I didn’t grow up the volume, I only adapted the range to the standard common people. Thank you for this jewel. I need some advice how to capture and to transform in audible sound, if I ask by email is there any chance to get an answer?