Mobile Web URL, is this coming from Heroku or do I need to get my own hosting service for my mobile web app?

In the Apps开发者_如何学C creation page on facebook I have to enter a MObile Web URL, does this mean that I have to host my HTML5 mobile web app in an externally hosted service? like Amazon, or Azure? I know that HEroku is offered as a cloud service but it only supports Ruby, PHP, Python. But I want to use Sencha to create my HTML5 mobile web app , and include facebook JavaScript SDK in it. So, does this mean that I need to host my HTML5 app in an external host service and enter that URL as the Mobile Web URL in the Facebook App creation page?

thanks

You can build your mobile web app using any language or framework you choose. You do need to host it on an external service, like Amazon, Azure - or Heroku, which can support any number of server-side languages as you mentioned.

Take a look at our mobile web tutorial here: https://developers.facebook.com/docs/mobile/web/build/