Custom mobile app

I am looking for a developer who has experience building beautiful, quality, simple to use, mobile apps. Project description: An alarm clock with the functionality to search for and purchase different sound files of around 5mins in length. This project is for a new mobile app, so you will be starting from scratch. You will be provided with wireframe examples of the design, UI and functionality. We will need to source some bell sounds from somewhere - perhaps you could suggest? More information will be provided to the winning contractor. Requirements: - Someone who can do the development and also provide the UI design - Someone who can write clean, modular, robust code to implement the desired requirements - Someone who can contribute ideas for making the application better and easier to use - Someone with experience building mobile apps - Someone who can provide testimonials - Someone who speaks English well Here's what you need to do next: - Please reply with examples of your previous work including any other user interface or design examples you have done before. If I like your previous work, I will reply and give you more details.