Need an (simple) iOS application - maths content

Looking for an experienced iOS developer freelancer to fulfill my project. It should be a very simple app: This is an educational app, presenting solutions of past exam papers - that's its sole purpose! There is no interactive content apart from the tip button - see below. The app structure: -On entering, the user is presented with a simple menu: choose a subject. Currently, this is just maths - mathematics. -After selecting the subject, another menu pops up, with just two options, higher or lower level. These two menus should preferably be in the shapes of large rounded rectangles - as there is so little choice. -Then another menu appears, giving the user the choice of years (2005-2016). Warning, I need some years to be locked and to be paid for - whereas the app is free on itself. I.e., this is (an) in-app purchase. -After that, and purchase if paid for, the questions menu appears - questions 1-10. -Finally, after selecting the appropriate question, the user is presented with the content - this will be of mathematical nature, and I will write this in Latex. It's your choice as a freelancer / developer whether you want the format changed to pdf, or not, or any other suggestions are welcome. -On the content page, there needs to be the following buttons: -Back, bringing the user back to question choice (actually this needs to be in all menus). -Next and Previous questions (if applicable). -A tip button, on pressing which the background will blur and the tip will pop up, which you can exit by pressing anywhere on the screen. This should be placed somewhere in the content, wherever it is logical to place that tip. That's it! It can be written in Swift or Objective C. I also need to be able to add the content myself (extra menu items, for example, year, subject, and new content files). This is mandatory. The design of the app needs to be clean and minimalistic, with main focus on content. I don't need a login - unless you think it's absolutely necessary and back up your arguments. However, to avoid too much weight of the app, you might consider storing the paid content on the server, and pull it to the device if the user purchases it. Need it for iPhone 5+. Thanks.