Titanium isn't horribly slow, but it isn't some cross-platform panacea either. Building an app that supports iOS and Android well is still a big task. You don't

Titanium isn't horribly slow, but it isn't some cross-platform panacea either. Building an app that supports iOS and Android well is still a big task. You don't just build one app and get the second platform for free. Lots of the APIs, methods and properties are platform specific or function quite differently platform to platform. Most of this is documented but some of it isn't. I don't want to be overly critical of Titanium as I think it has its place but I think your post was a bit optimistic. BTW, the OP's original rant reminds me of a similar rant for Titanium: http://usingimho.wordpress.com/2011/06/14/why-you-should-stay-away-from-appcelerators-titanium/ http://usingimho.wordpress.com/2011/06/14/why-you-should-sta... That rant is a few years old and Titanium has made a lot of progress since then. However, some of the points still hold true.