There are 2 apps.
Beersmith Lite, will allow you to search for recipes, as well integrates to your desktop/laptop version via the recipe cloud. IE: upload a recipe from your PC to the cloud, and you can then get it on your android (think it supports Ipad/phones as well), and allows you to use the timers and all that sort of thing. Only thing it can't do is make or modify recipes, and is like $4 for the ap.
The regular Beersmith app is $9, and the only difference I see is that it does allow you to make and modify recipes on the app, on the fly.
I only went for the "lite" app, as I didn't see the point in the full version on the tablet when I had it on the PC.
Presumably the full version app maybe doesn't have all the same capability as the full program, considering the app is $9, and the full program $28