Ugh. I was all set to deliver the snarky comment before BGA set the bar.
My guess is that you may be trying to invoke 3D touch on these apps in a way that is not established. Spotify, as BGA mentioned, has 3D Touch type elements within the app. But actually, you could do those things before 3D Touch was even released. They are features of the long press, not 3D touch. Pressing on the app icon itself will not cause anything to happen.