That is really the only reason for native apps these days -- access to camera, accelerometers, various coprocessors, etc. All of these are steadily being added

That is really the only reason for native apps these days -- access to camera, accelerometers, various coprocessors, etc. All of these are steadily being added as HTML5 (formerly Web Applications 1.0) API's. Even OpenGL and direct graphics optimizations. For eg. the geolocation API already exists: http://dev.w3.org/geo/api/spec-source.html http://dev.w3.org/geo/api/spec-source.html