Texting iPhone App

Hello, I want to create an iPhone texting app. I want this app to be a privacy texting app though. Here is the function i want: 1. When people get texts to their phone, they can also get that texts sent to my app. When they open the app, it will have their contacts listed just like it would in iphone texting home screen. In my app i want option to rename contact. Contact has regular name in normal iPhone text app and in phone directory, but only has custom name in my app. 2. When user gets text and opens with my app, after they select the contact which the text came from, the screen will be blank, just keyboard will appear. In order for user to see text they have to put their finger on the line where the text is, and as they move their finger the text will reveal one word at a time, but when the finger moves away from a word it fades away. Same for sending a message, when user types i only want one word displayed at a time, rest fades. So that is all i need, i just want the app to look nice and run smoothly. I hope this app is possible the way i want it. I will most likely choose someone with a good price and who can finish this project relatively fast, i don't know anything about app making so i don't know how long something lie this would take. Also someone who can build app top to bottom, i don't want to hire a separate designer. Thanks for your time