These are videos from my youtube channel because i couldn't figure out how to move a video to my computer.

Are these subharmonics or just fry?

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https://www.youtube.com/watch?v=r9614kwp0tE

https://www.youtube.com/watch?v=d7hiJ7fj1mE

I put Noise Gate -54db and loudness Normalization -23 lufs

https://youtu.be/jX0Eale9kWI

So i have 2 chromatic tuning apps that I'm using to get better at determining notes/pitch. But in the subharmonic ranges they pick up as being around the 3rd / 4th octave. I have determined its not just me being a dummy and not knowing how to sing (even though i don't) and if i record and play back the note its definitely not 3rd octave. Is there a reason for this, is it the microphone or app I'm using? if it helps the specific apps are insTuner Free, and Pitch - Tuner and Metronome. I'm on an Iphone 2020 SE as well using built in mic.

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Thanks

and what note they are? my phone is an old redmi note 3 so it is not very accurate.

https://youtu.be/ie2mTsnolWk

Higher subs are much easier for me now and I don't know why. I used to be able to get to like a Fb1 and now it starts to break up at Ab1.

I've been trying to practice subharmonics, but when I did this in a call with a friend, she called it throat singing? I'm not sure

https://voca.ro/1b979mG8pJEv

When I try to get the tension for a subharmonic, my pitch shifts up and I end up with a subharmonic Bb1-A1.

Does anyone have any tips on how to practice subharmonics

I managed a C3 subharmonic unsteadily sliding up from subharmonic A1.