So far, the best way is to feed the result of App Studio to PhoneGap, which can then create an apk (for Android) or an app that can be submitted to the App Store. Both of those solutions require that you download and configure the SDKs for their platforms. In the case of iOS, you'll also need to deal with the App Store.

OTOH, many apps work nicely as web apps, and it's improving all the time.