Believe people do not install any app easily, and this is your biggest problem at the start, but people can easily access your site by clicking on a link and they can see it!
How do you want to advertise? How can you direct people to the app?
So keep in mind that when you do not have a good customer base, you are looking to build a website when it comes to a significant amount and you ask for a lot of software builds. You can do something other than designing the site.
So do not hurry the progress is overwhelming. Nobody has succeeded in succeeding over the course of the day.