Cross-Platform Productivity App Development

I'm looking for an experienced mobile app developer to create a productivity app for both iOS and Android platforms fast today you start working i need results in a week if you think you are capable then only apply... (Budget: ₹1250 - ₹2500 INR, Jobs: Android, Android App Development, App Design, App Store Optimization, Backend Development, iOS Development, iPhone, Mobile App Development, PHP, User Interface / IA)