We change because of tension.
We, all, have our own internal monologue. We do things that fit with our worldview. We do things that people like us do. We have our own patterns.
When we face tension, we try to relieve the tension. If the tension can only be relieved by changing, we change.
E.g.: When the waiter, or seller gives us the card payment terminal, and it shows fix percentages for tips (and the zero tip is hidden), its tension. They are looking us. What can we do?
Changing to a new app is also tension, vs not changing. What will be then the general move?