I'm continually disappointed by the non-proliferation of webapps. The iPhone has hooks enabling you to make it fullscreen, have an app icon, work offline, even control the colour of the status bar... but no-one knows how to use them. And Android doesn't even support them- I thought Google was supposed to be a friend of the web?!
In theory you're right. Unfortunately in practice most webapps better stay in the browser on iOS. The Javascript engine on full-screen webapps is slower than the one in Safari (that's why the previous Facebook app was slow as hell).
Aside from that, offline app cache is a PITA to implement.
Things have got better though. Web audio works on iOS 6, and Chrome on Android finally delivers a proper browser. I hope in a few years time we'll actually be able to serve games in WebGL to the browsers on both platforms.
The Javascript engine on full-screen webapps is slower than the one in Safari (that's why the previous Facebook app was slow as hell).
Not true[0]. Home-screen web apps use the Nitro engine as of iOS 5. It's only embedded web views (i.e. the Facebook app, Google Chrome on iOS) that don't. FWIW Chrome is my favorite browser on iOS, despite the speed loss.
