and then there's this:
http://www.stefankendall.com/2011/12/29/using-appmobi-stop-immediately/
But that can go both ways ranma.
Right now phongap has no sound. It is free but adobe is planning on announcing fees as soon as they finish developing Adobe Edge or maybe even sooner. Sure Adobe makes some excellent products but they all come at a very bloated price. Personally I wouldn't use Adobe products if the company I work for wouldn't buy them for me. The truth is there just not worth it. Anything you can do with Adobe products you can do with open source products.
While appmobi use to have a fee but is now open source, and it has sound. appMobi makes all there money from there hosting service. From what I have been reading they haven't given up on us they are still trying to make Construct 2, and appMobi fully compatible.
It is these reasons why I would choose appMobi over phonegap.