I'm all down for 17L of coffee! It's a precious, precious liquid, coffee is. 😂
You might get surprised when I tell you that most customers don't know what they want or need if you don't ask them the right questions.
There is a whole lot of truth to that. I do not design apps, but I do design solutions for my client's, and I can say with a certainty that, for the most part, they have no idea what they really want. They know what they think they need, but that's about it. One of the biggest tricks is telling them without "telling them" what they need, and having them then want it.
RE: Designing mobile app - Trends, features, catches, advices... no.1