The screen literally just had tits. The whole point of the app was to look at tits. There was nothing else of a woman involved. They really did just take the "tits" part and exclude the rest!
I'm not talking about every guy on the planet. But I think it's very clear that whoever made this app thought, "Know what? We should make an app that just has tits. Nothing else, just tits."
More to the point: the women are being used in a way that is completely determined by the user of the app, instead of being given any kind of consideration as people.
Tits are part of people. I have tits. People have tits and I like people and I like their tits. Without people, there are no tits. How many different ways can I say this? I don't like tits that are disconnected from people. That's disgusting.
If I am staring at a woman's tits - I am certainly giving her whole person my consideration, even though my eyes can only look at one thing at a time. WTF would I do with just a pair of tits?
No, the reason I'm looking is that I probably want more.
I am certainly giving her whole person my consideration
This app removes the women's ability to participate in the exchange at all. They have no control and are presented in a way that is completely in control of the user. When you remove her ability to decide how her body is being used, you are not considering her as a whole person. It's not about tits.