Strange underlying sounds in pink noise. – White Noise Review

I have been using the Lite version for a year and a half (269.91 total days of pink noise via the apps counter) so I‘m extremely familiar with how the app works and it’s sounds. I cannot sleep without any white/pink/brown noise as I have had a sleep sound machine since middle school and I’m 39 years old now. My old Norelco sleep machine died and then I moved to this app and for the past month I have been detecting two underlying sounds within pink, white and brown. The first sounds exactly like an old computer hard drive reading and chattering away second sound is like a ringing or another frequency within the recording. If I turn the app off the sound goes away immediately, I have used airplane mode on my phone thinking radio frequency was seeping through the speakers but that didn’t have any effect. I’ve put my phone under my glass top end table thinking that the sound was being altered by my ceiling fan, that didn’t work either. I’ve adjusted the sound pitch in settings but no difference at all but it seems like the sounds are becoming more noticeable every night and I can’t continue using it. I love this app and I even bought the version without ads last night thinking it would have higher definition sounds but I still hear these underlying sounds. If one of the developers can please read this and take a look at the pink noise sound and see if there is something wrong with it now or if an update has caused an issue with the sounds because I haven’t slept good in weeks.
Review by STLSTI on White Noise.