Hi! Sorry for a late reply, hope this msg still finds you. With Qt DS you can create screens to any device or application. We don't ship with iOS or Android wizard so the screen sizes you need to determine yourself. The standard Qt Quick components have styling for mobile OSes. Usually the application done with Qt DS on mobile devices has been the control app for some device. Travel booking app sounds a lot like interfacing with external data. When binding the backends to the app you most likely need to code a bit. If you need more information, don't hesitate to ask. I'll be monitoring this forum actively now.
