With your team, create a mockup of your app. There are many online tools for creating interactive mockups of apps. Many are free to use or free to try. Pick one and use it to design all the screens users of your app will see.
Project Mockup
With your team, create a mockup of your app. There are many online tools for creating interactive mockups of apps. Many are free to use or free to try. Pick one and use it to design all the screens users of your app will see.