I am looking for a simple app for iPad which allows our field engineers to see their appointments. The following features must be implemented : - View list of daily jobs. - Select a job to view customer information, job information and google map for address. - When an engineer arrives at the customers premises, he selects the job and checks in/opens the job. - Once the job is complete, he completes a form which outlines any additional items used. - The customer can then sign electronically on the app and close the job. We can create a json feed on the server which will contain the data which needs to be parsed in the app. We have no designs but are happy to use onset UI or another UI. Please tell me an estimated number of hours to create the app so we can calculate a budget.