So, you want to make an app? It can't be that difficult, right? How do you do it? Where do you start? What s important? What are the pitfalls? And how much does it cost? The questions quickly pile up, yet your idea remains. So, what do you do? We have written this book for those who have an idea for an app, those who are stuck or those who would simply like to better understand what it means to just make an app. The book is easy to read and filled with concrete tools, models and tips for practical usage as well as for teaching in digital concept development and innovation. The book reflects the advanced and multidisciplinary process of app development. We hope this book will give you a solid understanding of the entire process from idea to app so you can get off to a great start and thereby increase your chances of success when turning your idea into reality!