quiz app iphone

i want you to develop a basic app first for iphone/ipad/mac the workflow is something like this 1. welcome screen, pls. enter name, next screen welcome "name" label and "name" audio. [login to view URL] with 3 multiple choice answers, select one radio button to answer and the labels are images. 2 buttons, submit and End after clicking submit, if answer is correct goto to next screen question with 3 multiple choices. if the answer is wrong then display the correct answer with explanation and option to go to next question. 3. same as 2, one question, image and a 2 multiple choices 4. same as 2, one question, image and a 4 multiple choices 5. same as 2, one question, space for image and a textbox to put the value. My question is how many questions can i have in this app in terms of memory, how much memory should the whole app have for downloading and navigating smoothly without any issues. content is mostly text and images may be reused in different questions. I have the entire list of questions with multiple choice answers. Also there should be scoring,time option and grades etc. Please let me know the time and cost for finishing this application. also let me know if u have any questions.