Rapid Forms is an app that will make a database that you can fill out through your own custom form. The data is saved in a format called XML that can be opened using many different types of applications available on Windows, Mac, and Linux computers.
Changing the form is simple too. Just change the form structure using any text editor and follow the simple markup language instructions on this web site. New markup will be added as the app grows using your suggestions for new input modules!
When it comes to getting data out of your form, you can either email the data right out of the app, or you can download the data from the app using iTunes File Sharing. Both methods are simple and outlined on this web site. New data extraction methods will be added as the app grows using customer feature requests.
There is a lot more information on the web site including examples, tutorials, and user comments. If you have forms you want to share, send them in and get a mention on the front page!