Traditional prototyping tools make it too easy to build unrealistic visuals because they're just animation engines with no understanding of the actual frameworks on iOS and Android.
Neonto Studio ensures that the prototype that lands on your desk can be implemented in code—because it already is. There is no framework or other runtime dependency, it's just Xcode and Android Studio projects.
What to do with the generated code is up to you. For rapid projects, the Neonto-generated project can be very useful as a starting point. For complex projects, pick what is useful: image assets, colors, fonts etc.