This function works with any app, this is only the case if the phone was pressure-sensitive touch, and not many phones out there have that. On a non-supportive device the features will be excluded, I do not believe there will be a crash, but it is safe to check.
For example when my screen apears(home screen) in my game then if I want that people just have to pressure the sound button and after that they can drag the sound…just like iPhone6s and now instagram also adopted this(if you ever noticed)