I have a friend that was interested in having a piece of software that he normally uses on his Windows laptop work on his iPad. This software is a basic database that keeps up with contacts and some statistics and has some reports. He needs to be able to print those reports. I believe there would also be a need to export/import the data to share with others. This app must be private and cannot be in the app store. Also, because of the sensitive nature of the data, it should not be stored on an external server.
My first thought was to turn to HTML5/Sencha. That is where my experience is. I built a quick mock up and it uses the SQL proxy for Web SQL storage. That all works great. I haven't tested printing reports yet, but in theory it should be possible with an AirPrint printer since Safari has print capabilities.
The one thing I am worried about is the export/import of the data and backups. The File API is not yet available on iOS right? So I can't write the data to the file system. How else could I transfer data out of the Web SQL database? I thought of an export button that sends the data to a web service that packages it up, but again, the sensitive data cannot be sent to a server.
Any ideas? Does this have to be a native app?