It should be working, please test it.
The step-by-step tutorial of how to enable offline voice recognition on Android can be found here:
http://stackandroid.com/tutorial/how-to-enable-offline-speech-to-text-in-android/
FYI, one of the top plugins at asset store is Google cloud speech engine. As the name suggested, it needs internet connection. If your plugin could surpass such limitation, I’m sure a lot of people will find it more useful than others.