You can then also add it as a button to control center. Or create a shortcut if you want to have it on your Lockscreen or Home Screen.

Most people still don’t know that their phones most likely already has a noise generator build in without any extra app (at least on iOS)

Yep, I trust MAS.

The private tab has the main purpose of not adding the browsed sites to your browser history. It will not improve safety from the outside in any meaningful way.

I have not looked for games, but media they do have plenty.