A simple unit conversion app for IOS

We are looking for an individual or a team who can develop an iOS app. This app is about converting values from one unit into another (pounds to kg). A simplistic design with usability for easy unit conversion is the key goal of this project.
App Features:
Main menu with square buttons for the main unit categories -
o Weights
o Distance
o Temperature
o Forces
o Electric
o Time
o Two Fields to type in numbers with arrows between them to switch the conversion direction
o Under the fields drop-down menu select unit type