I mentioned a while ago that it was possible to make off-line web apps using a combination of the data:/ uri support and the database storage on the iPhone 2.0 firmware. While this solution works, it sure is a bit of a hack.

Fortunately there is another way to use web apps offline on the iPhone. It turned out to be so simple i wondered why i didn’t think of it before. Well, here is how you do it:

Hey presto! While you do get a warning, you can still use your lovely web app offline. Unless of course, you restart your iPhone or close the window. If that happens, your data will still be safe if your web app uses the database api to store it. Just hope you get your signal back so you can start working again. :)