Cross-platform frameworks are inevitably crap. If you really need to run an application on multiple platforms, write a cross-platform core and implement the human interface atop it for each platform using each platform’s native frameworks and languages.

The result is always a better product with happier users. If you don’t want to invest in that, you should at minimum be willing to admit to yourself that you’re OK with giving your users something subpar because it’s to your advantage to do so.

HTML + CSS + JS :^)