Android App

I need an android app An Answer Machine App A Free version with limited features A Paid version with all features The app can answer calls when user cant answer the phone The app can forward calls to another phone number The app will have ready "answer machine greetings" The app needs to have notifications User can record their own greetings User can select which users from the phone contact list to forward their calls (white list - black list) The app can be set to operate between certain hours The app needs to work on most android devices The app needs to be bug, lagging free Full features & details will be discussed with the right freelancer. The design concept needs to be very clean, modern with big buttons & text, something clean maybe like skype, vider, window 8 etc You cant sell the file source for the app. Future app for IOS & Windows, Blackberry also needed for the right person I will only respond to users with apps portfolio 10 - 20 days to complete this task I prefer full payment on completion, however, I can do 10% mile stone before the work started and the remaining once the app is completed and signed off. no payments in process of the development. Please only bid if you are confident and committed to this project. Good luck