I downloaded your app and checked it out. Below are some tips if you would like to follow.
How about enhancing your splash screen? Like for example, instead of simple plain white splash screen, add background color to it. Also make the fonts somewhat catchy
Instead of simple button with text (
'Take a picture') on it, add image to the button like that of camera. (You know Picture worth a Thousand words )
Also add an option to choose a picture from device’s gallery. (You can take the help of Image picker component)
Add some some spacing between two buttons. (You can use an empty label or an arrangement and set the width according to the gap you want between two buttons)
And last but not the least, add some colors to the background of every screen. Plain white doesn’t look good.
Above mentioned are some of the things that I found during the short use of your app. Hope you like it and would make changes as soon as possible
Also don’t forget this