Need to wrap an existing working iOS application into an install package

We have a working iOS Mac application and all we need is for someone to develop a install package for us.

We could buy this tool if it's needed: http://www.macupdate.com/app/mac/34613/packages

1. Customer will download the application and during the download it will unbundle and start installing automatically with minimum customer intervention. The only customer interaction should be to (1) select whether the app should be available to all users of the computer or only to the installer account and (2) change the directory where the files should be saved. Customer will not be asked to unzip anything.

2. Upon installation customer will launch the application from the Applications folder where the TestSim app is listed along with its logo icon for identification.