What I can do for you:
. Work on your existing Android app
. Build you an Android app prototype
. Design and implement accurate voice interfaces using available speech recognition technology.
I've been an Android app developer full time since 2009. I've worked with a dozen clients as a consultant and worked on some widely popular apps such as the weather channel app. I've also published this book on Android sensor programming and speech recognition. This means I have enough experience to keep improving your app and most importantly to help you use your app to accomplish your business goals.