You can mostly make HTML5 "fast enough", if you know where all the sweet spots are. A comparison of a finely tuned native app, to a a naively built html5 coded

You can mostly make HTML5 "fast enough", if you know where all the sweet spots are. A comparison of a finely tuned native app, to a a naively built html5 coded up with much the same methodologies as a 1999 dhtml site, ignorant of the the constraints and allowances of the mobile platform, seems hardly fair, but that's what most people are going to see. failure to use even easy performance wins like html5 app cache, css3 3d transforms (hardware accelerated), local storage, etc. etc. But it's all tech, which is putting the cart before the horse. I'm a local mom and pop grocery store. Do I need an app?