Simple Productivity App for iOS and Android Smart Phones

I am creating a simple productivity application for iPhone and Android. I want a fresh design from scratch, since no copyright infringements need to be filed in the future. Please maintain proper and clear English since mis-communication is costly for both of us. Also provide a portfolio of your work. Please know that this is not a one-time job. Maintain professionalism, hard work, and most importantly passion to create a healthy and long relationship.