iPhone offline application with synchronization

Question

I\'m looking into building an application which works just as well offline as it does online. Since the application cannot communicate with the server while in offline, there is

Answer 1

I would store all the information I gather while offline in a SQLite database. Then, on user 's request, you can SYNC all the stored information with a server using HTTP or a custom TCP/IP protocol you can come up with.

I have been using this approach on Palm OS applications for almost 10 years now, and they do work very effectively.

As far as I know, the only "tool" you will have to accomplish this is plain old OBJECTIVE-C with Cocoa Touch. Although you could use some TCP/IP C++ libraries that will make your life easier if you decide to implement your own protocol.