iPad application

I am looking for an experienced Apple App designer/programmer for developing an iPad application. The draft layout is already designed hence the project will be based on this. English is the language used. The overall function of the App is to display aviation information and charts for approx. 40 individual airports. The below described 5 options must be available from a footer menu: (1) main display: combi chart/info (2) main display: fixed chart (3) pop-up display: notepad (4) pop-up display: flight log (5) setup/purchase. --- (1) MAIN DISPLAY: COMBI CHART/INFO A.: Combi chart/info: dynamic display with a chart section and an info section. Navigation must be based on tabs, with 2 chart tabs and 8 information (graphics, text and icons) tabs per airport. It must be possible to pre-select 4 airports (departing, arrival, 2 x alternative), which must be available from a header menu. (2) MAIN DISPLAY: FIXED CHART B: Chart: fixed display of 2 charts with limited local information (text) per [login to view URL] must be possible to pre-select 4 airports (departing, arrival, 2 x alternative), which must be available from a header menu. (3) POP-UP DISPLAY: NOTEPAD A third display must be available for both of the above 2 main display options: a notepad must be available for freestyle handwritten notes and a small time table (with 3x3 cells). It must be possible to hide and show the notepad display at any time. The present info at the notepad must be kept until the user chooses to erase the handwritten notes or reset the time table. (4) POP-UP DISPLAY: FLIGHT LOG A fourth display must also be available for the above 2 main display options: a simple flight log for manually adding log data of the present flight. The log data entered must be kept in the user chooses to delete the data. Both the notepad and the flight log must be displayed “above” the active main display by dimming the main display as a background. (5) SETUP/PURCHASE The App must be for free, but only for a limited number of airports. It must be possible for the user to purchase extra airports from this setup option. Besides purchasing new airport data, the user must have access to simple setup options: Selecting the pre-selected 4 airports to be available in the main displays, and editing column headings for the flight log. --- The aviation information is frequently changed and must be available to the user by a normal App update. For the administrator to update and maintain the aviation information, the data and charts must be easily managed by e.g. use of database. When the user purchases an airport, free updates must only be available for a limited time period, e.g. 1 year. Only landscape views must be used. If easily implemented, GPS and dynamic charts/maps could be a possibility. Otherwise, fixed pictures must be used as charts/maps. Please describe your experience within this area. This is a short specification, please feel free to contact me if you have any questions.