CustomContacts

I need an app built for my consulting business that I will be supplying to the salespeople of each organization I work with. The app is a contacts app and needs to mimic the abilities of the iphone contacts app. It should have the same feel and functionality. In addition the app needs to be completely separate where the contacts are only entered into this app. It needs to be fully searchable. It needs to have the ability to query/filter the various fields, it needs to have the ability for the user to add 10 of their own fields(custom fields of their choice that will be in each of their contacts that they add, it needs a calendar/planner and lastly it needs to have some sort of backup and or way to download info( if a phone is lost or a new one is purchased the material entered needs to be able to be retrieved and reloaded onto new device. I need the project to start immediately and have 60 days to complete. I understand that since it is not utilizing the native contacts app that when a call or text is incoming it will only provide phone number. I do not mind ios or HTML5 and utilize phoneGap to pair with native features on the iphone.