Updates to Existing Android Phone App

I have an Android App called Gold Bug Calculator. that was launched in the last few weeks. The app provides live precious metal prices in all major currencies as well as prices of different gold and silver coins and jewelryI would like to add a feature to it. I am looking for a programmer who is experienced in Android Apps and can add a feature to an existing app fairly quickly. You need to have a good track record of working with Android apps. Coders with lots of arbitrations will not be selected. Interested parties please respond and I will send a description of the update function I want. I am interested in building a long term relationship with someone who can do further work on this app in the future as well as other apps.