But before you engage in such development, you need to completely make a platform and then move on to another plan, since a mobile application is expensive
It seems to me that the development of a mobile application is very important for today's projects. Most people use a mobile phone more often than a personal computer.
Important yes, but this should be done last but not least, since applications are very costly on a budget, you need to focus on the development of the project itself, and then on other additional functions