Android messaging app

I need an experienced coder to create an android app for us. I would like to create a picture based messaging app for Android. Aim of this app to create and send text message with icons. We want something similar like zlango app however we will be changing layout and some of the functionality. Please only bid if you have done successfully developed apps for android devices before and can make a successful app. Let me know if you have any question and I will answer them.