My experience with Firefox OS
thelab.o2.com
thelab.o2.com
I made a small Pomodoro app (https://github.com/worldsproject/pomos) as a test for learning the Chrome Web Store and FirefoxOS markets.
Chrome disallows some things, in my case localStorage, and replaces it with their own alternative. While not major, I still had to make adjustments. I also had to define a window. Again, not minor, but these still keep it sufficiently different from a normal webpage.
Whereas with the firefox app, I just had to write a manifest, and it worked without any changes.
The Chrome store is a bit more refined though, it has better and more options for displaying promotional graphics, and looks better overall.
You can download the FirefoxOS simulator as a Firefox add-on for free to have a play about with it: https://addons.mozilla.org/en-US/firefox/addon/firefox-os-si...