completing android app

hello we need someone to complet our android app. we currently have a fully functional iphone app and we need to make a 1:1 app for android . the app is for searching for apartments and it has push notification that also need to be inplemented on our server side. we have done almost all the UI screens and the prev developer had to quit the job because of illness .what left is mainly the coding part of the app the price u give need to be the final price meaning the price wont be raised during the project so take that in count tmx