Having worked in multiple places that ship iOS and Android, the real thing to focus on is cross-platform requirements, not code. Writing mobile apps is fairly

Having worked in multiple places that ship iOS and Android, the real thing to focus on is cross-platform requirements, not code. Writing mobile apps is fairly trivial - writing good requirement documents is black magic I have yet to see in the real world. Trying to share code is like trying scratch your left foot when your right foot itches. The issue with two codebases that are supposed to do the same thing is keeping them in sync over time. The only way to do that is by having actual requirement documents.