Modern cross platform mobile app development is a lie. Maybe if you do Apple first, I don't know. Maybe xamarin is better than Cordova, idk. I've spent more time tweaking to one platform than I would have just starting with a platform and writing two or three code bases. I've got more if iOS statements than I know what to do with and the Windows code is some hacky transpiled mess because UWP isn't ES6 ready for reasons. Also, some error and image handling just doesn't translate. All this and I've got significantly less features than I could have implemented in the same time writing in a native language.